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Finding the Fourth Proportional to 9,477.38, 13,079.06 and 5,285.90

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Solution

The fourth proportional to 9,477.38, 13,079.06 and 5,285.90 is: 7,294.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,477.38 : 13,079.06 = 5,285.90 : x
  2. Step 2: Convert to fraction form
    9,477.38/13,079.06 = 5,285.90/x
  3. Step 3: Cross multiply
    9,477.38x = 13,079.06 × 5,285.90
  4. Step 4: Simplify right side
    9,477.38x = 69,134,511.43
  5. Step 5: Solve for x
    x = 69,134,511.43/9,477.38
  6. Step 6: Final answer
    x = 7,294.69

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Find fourth proportional to 4,738.69, 6,539.53 and 2,642.95
Half scale
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Double scale
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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.