Home / 5,157.20-7,721.95-4,243.78

Finding the Fourth Proportional to 5,157.20, 7,721.95 and 4,243.78

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Solution

The fourth proportional to 5,157.20, 7,721.95 and 4,243.78 is: 6,354.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,157.20 : 7,721.95 = 4,243.78 : x
  2. Step 2: Convert to fraction form
    5,157.20/7,721.95 = 4,243.78/x
  3. Step 3: Cross multiply
    5,157.20x = 7,721.95 × 4,243.78
  4. Step 4: Simplify right side
    5,157.20x = 32,770,256.97
  5. Step 5: Solve for x
    x = 32,770,256.97/5,157.20
  6. Step 6: Final answer
    x = 6,354.27

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1.5x scale

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.