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Finding the Fourth Proportional to 8,959.98, 13,442.68 and 3,620.42

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Solution

The fourth proportional to 8,959.98, 13,442.68 and 3,620.42 is: 5,431.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,959.98 : 13,442.68 = 3,620.42 : x
  2. Step 2: Convert to fraction form
    8,959.98/13,442.68 = 3,620.42/x
  3. Step 3: Cross multiply
    8,959.98x = 13,442.68 × 3,620.42
  4. Step 4: Simplify right side
    8,959.98x = 48,668,147.53
  5. Step 5: Solve for x
    x = 48,668,147.53/8,959.98
  6. Step 6: Final answer
    x = 5,431.73

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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.