Home / 8,542.57-12,815.58-3,612.20

Finding the Fourth Proportional to 8,542.57, 12,815.58 and 3,612.20

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Solution

The fourth proportional to 8,542.57, 12,815.58 and 3,612.20 is: 5,419.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,542.57 : 12,815.58 = 3,612.20 : x
  2. Step 2: Convert to fraction form
    8,542.57/12,815.58 = 3,612.20/x
  3. Step 3: Cross multiply
    8,542.57x = 12,815.58 × 3,612.20
  4. Step 4: Simplify right side
    8,542.57x = 46,292,355.94
  5. Step 5: Solve for x
    x = 46,292,355.94/8,542.57
  6. Step 6: Final answer
    x = 5,419.02

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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.