Home / 7,974.92-11,007.82-5,142.30

Finding the Fourth Proportional to 7,974.92, 11,007.82 and 5,142.30

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Solution

The fourth proportional to 7,974.92, 11,007.82 and 5,142.30 is: 7,097.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,974.92 : 11,007.82 = 5,142.30 : x
  2. Step 2: Convert to fraction form
    7,974.92/11,007.82 = 5,142.30/x
  3. Step 3: Cross multiply
    7,974.92x = 11,007.82 × 5,142.30
  4. Step 4: Simplify right side
    7,974.92x = 56,605,512.79
  5. Step 5: Solve for x
    x = 56,605,512.79/7,974.92
  6. Step 6: Final answer
    x = 7,097.94

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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.