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Finding the Fourth Proportional to 8,119.40, 11,204.64 and 4,393.40

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Solution

The fourth proportional to 8,119.40, 11,204.64 and 4,393.40 is: 6,062.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,119.40 : 11,204.64 = 4,393.40 : x
  2. Step 2: Convert to fraction form
    8,119.40/11,204.64 = 4,393.40/x
  3. Step 3: Cross multiply
    8,119.40x = 11,204.64 × 4,393.40
  4. Step 4: Simplify right side
    8,119.40x = 49,226,465.38
  5. Step 5: Solve for x
    x = 49,226,465.38/8,119.40
  6. Step 6: Final answer
    x = 6,062.82

Related Problems

Find fourth proportional to 4,059.70, 5,602.32 and 2,196.70
Half scale
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Double scale
Find fourth proportional to 8,120.40, 11,206.02 and 4,394.40
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.