Home / 5,631.40-7,771.56-3,739.72

Finding the Fourth Proportional to 5,631.40, 7,771.56 and 3,739.72

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Solution

The fourth proportional to 5,631.40, 7,771.56 and 3,739.72 is: 5,160.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,631.40 : 7,771.56 = 3,739.72 : x
  2. Step 2: Convert to fraction form
    5,631.40/7,771.56 = 3,739.72/x
  3. Step 3: Cross multiply
    5,631.40x = 7,771.56 × 3,739.72
  4. Step 4: Simplify right side
    5,631.40x = 29,063,439.66
  5. Step 5: Solve for x
    x = 29,063,439.66/5,631.40
  6. Step 6: Final answer
    x = 5,160.96

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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.