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Finding the Fourth Proportional to 8,672.97, 13,015.14 and 3,479.25

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Solution

The fourth proportional to 8,672.97, 13,015.14 and 3,479.25 is: 5,221.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,672.97 : 13,015.14 = 3,479.25 : x
  2. Step 2: Convert to fraction form
    8,672.97/13,015.14 = 3,479.25/x
  3. Step 3: Cross multiply
    8,672.97x = 13,015.14 × 3,479.25
  4. Step 4: Simplify right side
    8,672.97x = 45,282,925.85
  5. Step 5: Solve for x
    x = 45,282,925.85/8,672.97
  6. Step 6: Final answer
    x = 5,221.16

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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.