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Finding the Fourth Proportional to 8,172.72, 12,259.08 and 2,329.32

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Solution

The fourth proportional to 8,172.72, 12,259.08 and 2,329.32 is: 3,493.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,172.72 : 12,259.08 = 2,329.32 : x
  2. Step 2: Convert to fraction form
    8,172.72/12,259.08 = 2,329.32/x
  3. Step 3: Cross multiply
    8,172.72x = 12,259.08 × 2,329.32
  4. Step 4: Simplify right side
    8,172.72x = 28,555,320.23
  5. Step 5: Solve for x
    x = 28,555,320.23/8,172.72
  6. Step 6: Final answer
    x = 3,493.98

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Similar ratio
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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.