Home / 8,255.61-12,387.06-3,872.70

Finding the Fourth Proportional to 8,255.61, 12,387.06 and 3,872.70

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Solution

The fourth proportional to 8,255.61, 12,387.06 and 3,872.70 is: 5,810.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,255.61 : 12,387.06 = 3,872.70 : x
  2. Step 2: Convert to fraction form
    8,255.61/12,387.06 = 3,872.70/x
  3. Step 3: Cross multiply
    8,255.61x = 12,387.06 × 3,872.70
  4. Step 4: Simplify right side
    8,255.61x = 47,971,367.26
  5. Step 5: Solve for x
    x = 47,971,367.26/8,255.61
  6. Step 6: Final answer
    x = 5,810.76

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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.