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Finding the Fourth Proportional to 8,577.32, 12,865.98 and 4,679.60

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Solution

The fourth proportional to 8,577.32, 12,865.98 and 4,679.60 is: 7,019.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,577.32 : 12,865.98 = 4,679.60 : x
  2. Step 2: Convert to fraction form
    8,577.32/12,865.98 = 4,679.60/x
  3. Step 3: Cross multiply
    8,577.32x = 12,865.98 × 4,679.60
  4. Step 4: Simplify right side
    8,577.32x = 60,207,640.01
  5. Step 5: Solve for x
    x = 60,207,640.01/8,577.32
  6. Step 6: Final answer
    x = 7,019.40

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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.