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Finding the Fourth Proportional to 8,542.55, 12,815.19 and 2,698.71

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Solution

The fourth proportional to 8,542.55, 12,815.19 and 2,698.71 is: 4,048.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,542.55 : 12,815.19 = 2,698.71 : x
  2. Step 2: Convert to fraction form
    8,542.55/12,815.19 = 2,698.71/x
  3. Step 3: Cross multiply
    8,542.55x = 12,815.19 × 2,698.71
  4. Step 4: Simplify right side
    8,542.55x = 34,584,481.40
  5. Step 5: Solve for x
    x = 34,584,481.40/8,542.55
  6. Step 6: Final answer
    x = 4,048.50

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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.