Home / 5,631.91-7,771.72-3,113.87

Finding the Fourth Proportional to 5,631.91, 7,771.72 and 3,113.87

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Solution

The fourth proportional to 5,631.91, 7,771.72 and 3,113.87 is: 4,296.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,631.91 : 7,771.72 = 3,113.87 : x
  2. Step 2: Convert to fraction form
    5,631.91/7,771.72 = 3,113.87/x
  3. Step 3: Cross multiply
    5,631.91x = 7,771.72 × 3,113.87
  4. Step 4: Simplify right side
    5,631.91x = 24,200,135.61
  5. Step 5: Solve for x
    x = 24,200,135.61/5,631.91
  6. Step 6: Final answer
    x = 4,296.97

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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.