Home / 5,481.21-7,564.20-3,123.30

Finding the Fourth Proportional to 5,481.21, 7,564.20 and 3,123.30

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Solution

The fourth proportional to 5,481.21, 7,564.20 and 3,123.30 is: 4,310.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,481.21 : 7,564.20 = 3,123.30 : x
  2. Step 2: Convert to fraction form
    5,481.21/7,564.20 = 3,123.30/x
  3. Step 3: Cross multiply
    5,481.21x = 7,564.20 × 3,123.30
  4. Step 4: Simplify right side
    5,481.21x = 23,625,265.86
  5. Step 5: Solve for x
    x = 23,625,265.86/5,481.21
  6. Step 6: Final answer
    x = 4,310.23

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1.5x scale

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.