Home / 8,330.08-12,490.87-2,781.43

Finding the Fourth Proportional to 8,330.08, 12,490.87 and 2,781.43

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Solution

The fourth proportional to 8,330.08, 12,490.87 and 2,781.43 is: 4,170.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,330.08 : 12,490.87 = 2,781.43 : x
  2. Step 2: Convert to fraction form
    8,330.08/12,490.87 = 2,781.43/x
  3. Step 3: Cross multiply
    8,330.08x = 12,490.87 × 2,781.43
  4. Step 4: Simplify right side
    8,330.08x = 34,742,480.54
  5. Step 5: Solve for x
    x = 34,742,480.54/8,330.08
  6. Step 6: Final answer
    x = 4,170.73

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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.