Home / 1,871.34-2,581.52-1,125.20

Finding the Fourth Proportional to 1,871.34, 2,581.52 and 1,125.20

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Solution

The fourth proportional to 1,871.34, 2,581.52 and 1,125.20 is: 1,552.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,871.34 : 2,581.52 = 1,125.20 : x
  2. Step 2: Convert to fraction form
    1,871.34/2,581.52 = 1,125.20/x
  3. Step 3: Cross multiply
    1,871.34x = 2,581.52 × 1,125.20
  4. Step 4: Simplify right side
    1,871.34x = 2,904,726.30
  5. Step 5: Solve for x
    x = 2,904,726.30/1,871.34
  6. Step 6: Final answer
    x = 1,552.22

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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.