Home / 8,316.80-12,475.20-3,124.70

Finding the Fourth Proportional to 8,316.80, 12,475.20 and 3,124.70

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Solution

The fourth proportional to 8,316.80, 12,475.20 and 3,124.70 is: 4,687.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,316.80 : 12,475.20 = 3,124.70 : x
  2. Step 2: Convert to fraction form
    8,316.80/12,475.20 = 3,124.70/x
  3. Step 3: Cross multiply
    8,316.80x = 12,475.20 × 3,124.70
  4. Step 4: Simplify right side
    8,316.80x = 38,981,257.44
  5. Step 5: Solve for x
    x = 38,981,257.44/8,316.80
  6. Step 6: Final answer
    x = 4,687.05

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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.