Home / 8,322.40-12,487.20-6,470.74

Finding the Fourth Proportional to 8,322.40, 12,487.20 and 6,470.74

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Solution

The fourth proportional to 8,322.40, 12,487.20 and 6,470.74 is: 9,708.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,322.40 : 12,487.20 = 6,470.74 : x
  2. Step 2: Convert to fraction form
    8,322.40/12,487.20 = 6,470.74/x
  3. Step 3: Cross multiply
    8,322.40x = 12,487.20 × 6,470.74
  4. Step 4: Simplify right side
    8,322.40x = 80,801,424.53
  5. Step 5: Solve for x
    x = 80,801,424.53/8,322.40
  6. Step 6: Final answer
    x = 9,708.91

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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.