Home / 8,517.10-12,776.28-2,969.78

Finding the Fourth Proportional to 8,517.10, 12,776.28 and 2,969.78

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Solution

The fourth proportional to 8,517.10, 12,776.28 and 2,969.78 is: 4,454.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,517.10 : 12,776.28 = 2,969.78 : x
  2. Step 2: Convert to fraction form
    8,517.10/12,776.28 = 2,969.78/x
  3. Step 3: Cross multiply
    8,517.10x = 12,776.28 × 2,969.78
  4. Step 4: Simplify right side
    8,517.10x = 37,942,740.82
  5. Step 5: Solve for x
    x = 37,942,740.82/8,517.10
  6. Step 6: Final answer
    x = 4,454.89

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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.