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Finding the Fourth Proportional to 8,760.51, 13,143.05 and 2,917.17

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Solution

The fourth proportional to 8,760.51, 13,143.05 and 2,917.17 is: 4,376.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,760.51 : 13,143.05 = 2,917.17 : x
  2. Step 2: Convert to fraction form
    8,760.51/13,143.05 = 2,917.17/x
  3. Step 3: Cross multiply
    8,760.51x = 13,143.05 × 2,917.17
  4. Step 4: Simplify right side
    8,760.51x = 38,340,496.58
  5. Step 5: Solve for x
    x = 38,340,496.58/8,760.51
  6. Step 6: Final answer
    x = 4,376.51

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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.