Home / 1,587.28-2,378.49-937.30

Finding the Fourth Proportional to 1,587.28, 2,378.49 and 937.30

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Solution

The fourth proportional to 1,587.28, 2,378.49 and 937.30 is: 1,404.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,587.28 : 2,378.49 = 937.30 : x
  2. Step 2: Convert to fraction form
    1,587.28/2,378.49 = 937.30/x
  3. Step 3: Cross multiply
    1,587.28x = 2,378.49 × 937.30
  4. Step 4: Simplify right side
    1,587.28x = 2,229,358.68
  5. Step 5: Solve for x
    x = 2,229,358.68/1,587.28
  6. Step 6: Final answer
    x = 1,404.52

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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.