Home / 7,678.17-11,531.12-3,982.95

Finding the Fourth Proportional to 7,678.17, 11,531.12 and 3,982.95

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Solution

The fourth proportional to 7,678.17, 11,531.12 and 3,982.95 is: 5,981.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,678.17 : 11,531.12 = 3,982.95 : x
  2. Step 2: Convert to fraction form
    7,678.17/11,531.12 = 3,982.95/x
  3. Step 3: Cross multiply
    7,678.17x = 11,531.12 × 3,982.95
  4. Step 4: Simplify right side
    7,678.17x = 45,927,854.49
  5. Step 5: Solve for x
    x = 45,927,854.49/7,678.17
  6. Step 6: Final answer
    x = 5,981.61

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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.