Home / 10,279.89-15,419.82-2,488.68

Finding the Fourth Proportional to 10,279.89, 15,419.82 and 2,488.68

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Solution

The fourth proportional to 10,279.89, 15,419.82 and 2,488.68 is: 3,733.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,279.89 : 15,419.82 = 2,488.68 : x
  2. Step 2: Convert to fraction form
    10,279.89/15,419.82 = 2,488.68/x
  3. Step 3: Cross multiply
    10,279.89x = 15,419.82 × 2,488.68
  4. Step 4: Simplify right side
    10,279.89x = 38,374,997.64
  5. Step 5: Solve for x
    x = 38,374,997.64/10,279.89
  6. Step 6: Final answer
    x = 3,733.02

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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.