Home / 8,201.52-12,289.56-5,425.20

Finding the Fourth Proportional to 8,201.52, 12,289.56 and 5,425.20

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Solution

The fourth proportional to 8,201.52, 12,289.56 and 5,425.20 is: 8,129.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,201.52 : 12,289.56 = 5,425.20 : x
  2. Step 2: Convert to fraction form
    8,201.52/12,289.56 = 5,425.20/x
  3. Step 3: Cross multiply
    8,201.52x = 12,289.56 × 5,425.20
  4. Step 4: Simplify right side
    8,201.52x = 66,673,320.91
  5. Step 5: Solve for x
    x = 66,673,320.91/8,201.52
  6. Step 6: Final answer
    x = 8,129.39

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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.