Home / 1,575.38-2,363.21-421.13

Finding the Fourth Proportional to 1,575.38, 2,363.21 and 421.13

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Solution

The fourth proportional to 1,575.38, 2,363.21 and 421.13 is: 631.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,575.38 : 2,363.21 = 421.13 : x
  2. Step 2: Convert to fraction form
    1,575.38/2,363.21 = 421.13/x
  3. Step 3: Cross multiply
    1,575.38x = 2,363.21 × 421.13
  4. Step 4: Simplify right side
    1,575.38x = 995,204.71
  5. Step 5: Solve for x
    x = 995,204.71/1,575.38
  6. Step 6: Final answer
    x = 631.73

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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.