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Finding the Fourth Proportional to 7,446.78, 11,169.12 and 2,515.74

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Solution

The fourth proportional to 7,446.78, 11,169.12 and 2,515.74 is: 3,773.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,446.78 : 11,169.12 = 2,515.74 : x
  2. Step 2: Convert to fraction form
    7,446.78/11,169.12 = 2,515.74/x
  3. Step 3: Cross multiply
    7,446.78x = 11,169.12 × 2,515.74
  4. Step 4: Simplify right side
    7,446.78x = 28,098,601.95
  5. Step 5: Solve for x
    x = 28,098,601.95/7,446.78
  6. Step 6: Final answer
    x = 3,773.26

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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.