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Finding the Fourth Proportional to 7,125.78, 10,687.66 and 2,445.71

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Solution

The fourth proportional to 7,125.78, 10,687.66 and 2,445.71 is: 3,668.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,125.78 : 10,687.66 = 2,445.71 : x
  2. Step 2: Convert to fraction form
    7,125.78/10,687.66 = 2,445.71/x
  3. Step 3: Cross multiply
    7,125.78x = 10,687.66 × 2,445.71
  4. Step 4: Simplify right side
    7,125.78x = 26,138,871.14
  5. Step 5: Solve for x
    x = 26,138,871.14/7,125.78
  6. Step 6: Final answer
    x = 3,668.21

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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.