Home / 8,319.14-12,479.18-3,125.06

Finding the Fourth Proportional to 8,319.14, 12,479.18 and 3,125.06

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Solution

The fourth proportional to 8,319.14, 12,479.18 and 3,125.06 is: 4,687.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,319.14 : 12,479.18 = 3,125.06 : x
  2. Step 2: Convert to fraction form
    8,319.14/12,479.18 = 3,125.06/x
  3. Step 3: Cross multiply
    8,319.14x = 12,479.18 × 3,125.06
  4. Step 4: Simplify right side
    8,319.14x = 38,998,131.67
  5. Step 5: Solve for x
    x = 38,998,131.67/8,319.14
  6. Step 6: Final answer
    x = 4,687.76

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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.