Home / 5,631.76-7,771.85-3,079.57

Finding the Fourth Proportional to 5,631.76, 7,771.85 and 3,079.57

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Solution

The fourth proportional to 5,631.76, 7,771.85 and 3,079.57 is: 4,249.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,631.76 : 7,771.85 = 3,079.57 : x
  2. Step 2: Convert to fraction form
    5,631.76/7,771.85 = 3,079.57/x
  3. Step 3: Cross multiply
    5,631.76x = 7,771.85 × 3,079.57
  4. Step 4: Simplify right side
    5,631.76x = 23,933,956.10
  5. Step 5: Solve for x
    x = 23,933,956.10/5,631.76
  6. Step 6: Final answer
    x = 4,249.82

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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.