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Finding the Fourth Proportional to 8,959.76, 13,441.92 and 3,116.48

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Solution

The fourth proportional to 8,959.76, 13,441.92 and 3,116.48 is: 4,675.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,959.76 : 13,441.92 = 3,116.48 : x
  2. Step 2: Convert to fraction form
    8,959.76/13,441.92 = 3,116.48/x
  3. Step 3: Cross multiply
    8,959.76x = 13,441.92 × 3,116.48
  4. Step 4: Simplify right side
    8,959.76x = 41,891,474.84
  5. Step 5: Solve for x
    x = 41,891,474.84/8,959.76
  6. Step 6: Final answer
    x = 4,675.51

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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.