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Finding the Fourth Proportional to 8,604, 12,910.32 and 3,988.32

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Solution

The fourth proportional to 8,604, 12,910.32 and 3,988.32 is: 5,984.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,604 : 12,910.32 = 3,988.32 : x
  2. Step 2: Convert to fraction form
    8,604/12,910.32 = 3,988.32/x
  3. Step 3: Cross multiply
    8,604x = 12,910.32 × 3,988.32
  4. Step 4: Simplify right side
    8,604x = 51,490,487.46
  5. Step 5: Solve for x
    x = 51,490,487.46/8,604
  6. Step 6: Final answer
    x = 5,984.48

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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.