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Finding the Fourth Proportional to 6,130.38, 8,459.59 and 3,478.64

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Solution

The fourth proportional to 6,130.38, 8,459.59 and 3,478.64 is: 4,800.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,130.38 : 8,459.59 = 3,478.64 : x
  2. Step 2: Convert to fraction form
    6,130.38/8,459.59 = 3,478.64/x
  3. Step 3: Cross multiply
    6,130.38x = 8,459.59 × 3,478.64
  4. Step 4: Simplify right side
    6,130.38x = 29,427,850.76
  5. Step 5: Solve for x
    x = 29,427,850.76/6,130.38
  6. Step 6: Final answer
    x = 4,800.33

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Find fourth proportional to 3,065.19, 4,229.79 and 1,739.32
Half scale
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Double scale
Find fourth proportional to 6,131.38, 8,460.96 and 3,479.64
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.