Home / 5,721.20-8,573.70-4,228.80

Finding the Fourth Proportional to 5,721.20, 8,573.70 and 4,228.80

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Solution

The fourth proportional to 5,721.20, 8,573.70 and 4,228.80 is: 6,337.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,721.20 : 8,573.70 = 4,228.80 : x
  2. Step 2: Convert to fraction form
    5,721.20/8,573.70 = 4,228.80/x
  3. Step 3: Cross multiply
    5,721.20x = 8,573.70 × 4,228.80
  4. Step 4: Simplify right side
    5,721.20x = 36,256,462.56
  5. Step 5: Solve for x
    x = 36,256,462.56/5,721.20
  6. Step 6: Final answer
    x = 6,337.21

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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.