Home / 8,515.60-12,775.56-3,897.52

Finding the Fourth Proportional to 8,515.60, 12,775.56 and 3,897.52

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Solution

The fourth proportional to 8,515.60, 12,775.56 and 3,897.52 is: 5,847.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,515.60 : 12,775.56 = 3,897.52 : x
  2. Step 2: Convert to fraction form
    8,515.60/12,775.56 = 3,897.52/x
  3. Step 3: Cross multiply
    8,515.60x = 12,775.56 × 3,897.52
  4. Step 4: Simplify right side
    8,515.60x = 49,793,000.61
  5. Step 5: Solve for x
    x = 49,793,000.61/8,515.60
  6. Step 6: Final answer
    x = 5,847.27

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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.