Home / 5,221.32-7,821.53-3,140.18

Finding the Fourth Proportional to 5,221.32, 7,821.53 and 3,140.18

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Solution

The fourth proportional to 5,221.32, 7,821.53 and 3,140.18 is: 4,704.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,221.32 : 7,821.53 = 3,140.18 : x
  2. Step 2: Convert to fraction form
    5,221.32/7,821.53 = 3,140.18/x
  3. Step 3: Cross multiply
    5,221.32x = 7,821.53 × 3,140.18
  4. Step 4: Simplify right side
    5,221.32x = 24,561,060.03
  5. Step 5: Solve for x
    x = 24,561,060.03/5,221.32
  6. Step 6: Final answer
    x = 4,704.00

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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.