Home / 11,848.92-17,778.78-5,279.40

Finding the Fourth Proportional to 11,848.92, 17,778.78 and 5,279.40

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Solution

The fourth proportional to 11,848.92, 17,778.78 and 5,279.40 is: 7,921.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,848.92 : 17,778.78 = 5,279.40 : x
  2. Step 2: Convert to fraction form
    11,848.92/17,778.78 = 5,279.40/x
  3. Step 3: Cross multiply
    11,848.92x = 17,778.78 × 5,279.40
  4. Step 4: Simplify right side
    11,848.92x = 93,861,291.13
  5. Step 5: Solve for x
    x = 93,861,291.13/11,848.92
  6. Step 6: Final answer
    x = 7,921.51

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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.