Home / 8,760.40-13,142.70-2,917.06

Finding the Fourth Proportional to 8,760.40, 13,142.70 and 2,917.06

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Solution

The fourth proportional to 8,760.40, 13,142.70 and 2,917.06 is: 4,376.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,760.40 : 13,142.70 = 2,917.06 : x
  2. Step 2: Convert to fraction form
    8,760.40/13,142.70 = 2,917.06/x
  3. Step 3: Cross multiply
    8,760.40x = 13,142.70 × 2,917.06
  4. Step 4: Simplify right side
    8,760.40x = 38,338,044.46
  5. Step 5: Solve for x
    x = 38,338,044.46/8,760.40
  6. Step 6: Final answer
    x = 4,376.29

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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.