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Finding the Fourth Proportional to 5,456.76, 7,532.10 and 3,687.72

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Solution

The fourth proportional to 5,456.76, 7,532.10 and 3,687.72 is: 5,090.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,456.76 : 7,532.10 = 3,687.72 : x
  2. Step 2: Convert to fraction form
    5,456.76/7,532.10 = 3,687.72/x
  3. Step 3: Cross multiply
    5,456.76x = 7,532.10 × 3,687.72
  4. Step 4: Simplify right side
    5,456.76x = 27,776,275.81
  5. Step 5: Solve for x
    x = 27,776,275.81/5,456.76
  6. Step 6: Final answer
    x = 5,090.25

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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.