Home / 1,402.52-2,100.64-1,127.92

Finding the Fourth Proportional to 1,402.52, 2,100.64 and 1,127.92

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Solution

The fourth proportional to 1,402.52, 2,100.64 and 1,127.92 is: 1,689.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,402.52 : 2,100.64 = 1,127.92 : x
  2. Step 2: Convert to fraction form
    1,402.52/2,100.64 = 1,127.92/x
  3. Step 3: Cross multiply
    1,402.52x = 2,100.64 × 1,127.92
  4. Step 4: Simplify right side
    1,402.52x = 2,369,353.87
  5. Step 5: Solve for x
    x = 2,369,353.87/1,402.52
  6. Step 6: Final answer
    x = 1,689.35

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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.