Home / 8,520.39-11,754.90-6,287.61

Finding the Fourth Proportional to 8,520.39, 11,754.90 and 6,287.61

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Solution

The fourth proportional to 8,520.39, 11,754.90 and 6,287.61 is: 8,674.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,520.39 : 11,754.90 = 6,287.61 : x
  2. Step 2: Convert to fraction form
    8,520.39/11,754.90 = 6,287.61/x
  3. Step 3: Cross multiply
    8,520.39x = 11,754.90 × 6,287.61
  4. Step 4: Simplify right side
    8,520.39x = 73,910,226.79
  5. Step 5: Solve for x
    x = 73,910,226.79/8,520.39
  6. Step 6: Final answer
    x = 8,674.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.