Home / 7,188.72-10,778.92-3,291.04

Finding the Fourth Proportional to 7,188.72, 10,778.92 and 3,291.04

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Solution

The fourth proportional to 7,188.72, 10,778.92 and 3,291.04 is: 4,934.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,188.72 : 10,778.92 = 3,291.04 : x
  2. Step 2: Convert to fraction form
    7,188.72/10,778.92 = 3,291.04/x
  3. Step 3: Cross multiply
    7,188.72x = 10,778.92 × 3,291.04
  4. Step 4: Simplify right side
    7,188.72x = 35,473,856.88
  5. Step 5: Solve for x
    x = 35,473,856.88/7,188.72
  6. Step 6: Final answer
    x = 4,934.66

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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.