Home / 8,334.90-12,499.92-3,139.56

Finding the Fourth Proportional to 8,334.90, 12,499.92 and 3,139.56

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Solution

The fourth proportional to 8,334.90, 12,499.92 and 3,139.56 is: 4,708.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,334.90 : 12,499.92 = 3,139.56 : x
  2. Step 2: Convert to fraction form
    8,334.90/12,499.92 = 3,139.56/x
  3. Step 3: Cross multiply
    8,334.90x = 12,499.92 × 3,139.56
  4. Step 4: Simplify right side
    8,334.90x = 39,244,248.84
  5. Step 5: Solve for x
    x = 39,244,248.84/8,334.90
  6. Step 6: Final answer
    x = 4,708.42

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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.