Home / 7,718.88-11,572.56-3,613.92

Finding the Fourth Proportional to 7,718.88, 11,572.56 and 3,613.92

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Solution

The fourth proportional to 7,718.88, 11,572.56 and 3,613.92 is: 5,418.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,718.88 : 11,572.56 = 3,613.92 : x
  2. Step 2: Convert to fraction form
    7,718.88/11,572.56 = 3,613.92/x
  3. Step 3: Cross multiply
    7,718.88x = 11,572.56 × 3,613.92
  4. Step 4: Simplify right side
    7,718.88x = 41,822,306.04
  5. Step 5: Solve for x
    x = 41,822,306.04/7,718.88
  6. Step 6: Final answer
    x = 5,418.18

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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.