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Finding the Fourth Proportional to 7,472.90, 11,209.35 and 7,310.90

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Solution

The fourth proportional to 7,472.90, 11,209.35 and 7,310.90 is: 10,966.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,472.90 : 11,209.35 = 7,310.90 : x
  2. Step 2: Convert to fraction form
    7,472.90/11,209.35 = 7,310.90/x
  3. Step 3: Cross multiply
    7,472.90x = 11,209.35 × 7,310.90
  4. Step 4: Simplify right side
    7,472.90x = 81,950,436.92
  5. Step 5: Solve for x
    x = 81,950,436.92/7,472.90
  6. Step 6: Final answer
    x = 10,966.35

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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.