Home / 8,722.04-13,083.19-8,278.97

Finding the Fourth Proportional to 8,722.04, 13,083.19 and 8,278.97

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Solution

The fourth proportional to 8,722.04, 13,083.19 and 8,278.97 is: 12,418.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,722.04 : 13,083.19 = 8,278.97 : x
  2. Step 2: Convert to fraction form
    8,722.04/13,083.19 = 8,278.97/x
  3. Step 3: Cross multiply
    8,722.04x = 13,083.19 × 8,278.97
  4. Step 4: Simplify right side
    8,722.04x = 108,315,251.40
  5. Step 5: Solve for x
    x = 108,315,251.40/8,722.04
  6. Step 6: Final answer
    x = 12,418.58

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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.