Home / 1,542.87-2,127.31-1,071.17

Finding the Fourth Proportional to 1,542.87, 2,127.31 and 1,071.17

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Solution

The fourth proportional to 1,542.87, 2,127.31 and 1,071.17 is: 1,476.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,542.87 : 2,127.31 = 1,071.17 : x
  2. Step 2: Convert to fraction form
    1,542.87/2,127.31 = 1,071.17/x
  3. Step 3: Cross multiply
    1,542.87x = 2,127.31 × 1,071.17
  4. Step 4: Simplify right side
    1,542.87x = 2,278,723.31
  5. Step 5: Solve for x
    x = 2,278,723.31/1,542.87
  6. Step 6: Final answer
    x = 1,476.94

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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.