Home / 5,475.74-8,221.80-3,138.38

Finding the Fourth Proportional to 5,475.74, 8,221.80 and 3,138.38

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Solution

The fourth proportional to 5,475.74, 8,221.80 and 3,138.38 is: 4,712.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,475.74 : 8,221.80 = 3,138.38 : x
  2. Step 2: Convert to fraction form
    5,475.74/8,221.80 = 3,138.38/x
  3. Step 3: Cross multiply
    5,475.74x = 8,221.80 × 3,138.38
  4. Step 4: Simplify right side
    5,475.74x = 25,803,132.68
  5. Step 5: Solve for x
    x = 25,803,132.68/5,475.74
  6. Step 6: Final answer
    x = 4,712.26

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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.