Home / 8,717.31-13,079.61-2,874.51

Finding the Fourth Proportional to 8,717.31, 13,079.61 and 2,874.51

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Solution

The fourth proportional to 8,717.31, 13,079.61 and 2,874.51 is: 4,312.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,717.31 : 13,079.61 = 2,874.51 : x
  2. Step 2: Convert to fraction form
    8,717.31/13,079.61 = 2,874.51/x
  3. Step 3: Cross multiply
    8,717.31x = 13,079.61 × 2,874.51
  4. Step 4: Simplify right side
    8,717.31x = 37,597,469.74
  5. Step 5: Solve for x
    x = 37,597,469.74/8,717.31
  6. Step 6: Final answer
    x = 4,312.97

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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.