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Finding the Fourth Proportional to 3,957.54, 5,458.32 and 2,539.68

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Solution

The fourth proportional to 3,957.54, 5,458.32 and 2,539.68 is: 3,502.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,957.54 : 5,458.32 = 2,539.68 : x
  2. Step 2: Convert to fraction form
    3,957.54/5,458.32 = 2,539.68/x
  3. Step 3: Cross multiply
    3,957.54x = 5,458.32 × 2,539.68
  4. Step 4: Simplify right side
    3,957.54x = 13,862,386.14
  5. Step 5: Solve for x
    x = 13,862,386.14/3,957.54
  6. Step 6: Final answer
    x = 3,502.78

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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.