Home / 8,678.97-11,974.91-5,141.57

Finding the Fourth Proportional to 8,678.97, 11,974.91 and 5,141.57

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Solution

The fourth proportional to 8,678.97, 11,974.91 and 5,141.57 is: 7,094.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,678.97 : 11,974.91 = 5,141.57 : x
  2. Step 2: Convert to fraction form
    8,678.97/11,974.91 = 5,141.57/x
  3. Step 3: Cross multiply
    8,678.97x = 11,974.91 × 5,141.57
  4. Step 4: Simplify right side
    8,678.97x = 61,569,752.43
  5. Step 5: Solve for x
    x = 61,569,752.43/8,678.97
  6. Step 6: Final answer
    x = 7,094.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.