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Finding the Fourth Proportional to 7,475.10, 11,212.65 and 7,134.90

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Solution

The fourth proportional to 7,475.10, 11,212.65 and 7,134.90 is: 10,702.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,475.10 : 11,212.65 = 7,134.90 : x
  2. Step 2: Convert to fraction form
    7,475.10/11,212.65 = 7,134.90/x
  3. Step 3: Cross multiply
    7,475.10x = 11,212.65 × 7,134.90
  4. Step 4: Simplify right side
    7,475.10x = 80,001,136.49
  5. Step 5: Solve for x
    x = 80,001,136.49/7,475.10
  6. Step 6: Final answer
    x = 10,702.35

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.