Home / 10,279.40-15,419.04-2,488.20

Finding the Fourth Proportional to 10,279.40, 15,419.04 and 2,488.20

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Solution

The fourth proportional to 10,279.40, 15,419.04 and 2,488.20 is: 3,732.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,279.40 : 15,419.04 = 2,488.20 : x
  2. Step 2: Convert to fraction form
    10,279.40/15,419.04 = 2,488.20/x
  3. Step 3: Cross multiply
    10,279.40x = 15,419.04 × 2,488.20
  4. Step 4: Simplify right side
    10,279.40x = 38,365,655.33
  5. Step 5: Solve for x
    x = 38,365,655.33/10,279.40
  6. Step 6: Final answer
    x = 3,732.29

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1.5x scale

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.