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Finding the Fourth Proportional to 8,699.76, 13,040.88 and 5,000.88

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Solution

The fourth proportional to 8,699.76, 13,040.88 and 5,000.88 is: 7,496.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,699.76 : 13,040.88 = 5,000.88 : x
  2. Step 2: Convert to fraction form
    8,699.76/13,040.88 = 5,000.88/x
  3. Step 3: Cross multiply
    8,699.76x = 13,040.88 × 5,000.88
  4. Step 4: Simplify right side
    8,699.76x = 65,215,875.97
  5. Step 5: Solve for x
    x = 65,215,875.97/8,699.76
  6. Step 6: Final answer
    x = 7,496.28

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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.