Home / 8,290.38-12,431.28-3,358.68

Finding the Fourth Proportional to 8,290.38, 12,431.28 and 3,358.68

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Solution

The fourth proportional to 8,290.38, 12,431.28 and 3,358.68 is: 5,036.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,290.38 : 12,431.28 = 3,358.68 : x
  2. Step 2: Convert to fraction form
    8,290.38/12,431.28 = 3,358.68/x
  3. Step 3: Cross multiply
    8,290.38x = 12,431.28 × 3,358.68
  4. Step 4: Simplify right side
    8,290.38x = 41,752,691.51
  5. Step 5: Solve for x
    x = 41,752,691.51/8,290.38
  6. Step 6: Final answer
    x = 5,036.28

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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.