Home / 10,487.88-15,726.96-3,909.33

Finding the Fourth Proportional to 10,487.88, 15,726.96 and 3,909.33

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Solution

The fourth proportional to 10,487.88, 15,726.96 and 3,909.33 is: 5,862.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,487.88 : 15,726.96 = 3,909.33 : x
  2. Step 2: Convert to fraction form
    10,487.88/15,726.96 = 3,909.33/x
  3. Step 3: Cross multiply
    10,487.88x = 15,726.96 × 3,909.33
  4. Step 4: Simplify right side
    10,487.88x = 61,481,876.54
  5. Step 5: Solve for x
    x = 61,481,876.54/10,487.88
  6. Step 6: Final answer
    x = 5,862.18

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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.