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Finding the Fourth Proportional to 8,959.45, 13,439.07 and 5,450.42

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Solution

The fourth proportional to 8,959.45, 13,439.07 and 5,450.42 is: 8,175.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,959.45 : 13,439.07 = 5,450.42 : x
  2. Step 2: Convert to fraction form
    8,959.45/13,439.07 = 5,450.42/x
  3. Step 3: Cross multiply
    8,959.45x = 13,439.07 × 5,450.42
  4. Step 4: Simplify right side
    8,959.45x = 73,248,575.91
  5. Step 5: Solve for x
    x = 73,248,575.91/8,959.45
  6. Step 6: Final answer
    x = 8,175.57

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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.