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Finding the Fourth Proportional to 3,707.52, 5,123.20 and 2,657.92

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Solution

The fourth proportional to 3,707.52, 5,123.20 and 2,657.92 is: 3,672.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,707.52 : 5,123.20 = 2,657.92 : x
  2. Step 2: Convert to fraction form
    3,707.52/5,123.20 = 2,657.92/x
  3. Step 3: Cross multiply
    3,707.52x = 5,123.20 × 2,657.92
  4. Step 4: Simplify right side
    3,707.52x = 13,617,055.74
  5. Step 5: Solve for x
    x = 13,617,055.74/3,707.52
  6. Step 6: Final answer
    x = 3,672.82

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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.