Home / 5,722.20-8,589.70-3,123.80

Finding the Fourth Proportional to 5,722.20, 8,589.70 and 3,123.80

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Solution

The fourth proportional to 5,722.20, 8,589.70 and 3,123.80 is: 4,689.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,722.20 : 8,589.70 = 3,123.80 : x
  2. Step 2: Convert to fraction form
    5,722.20/8,589.70 = 3,123.80/x
  3. Step 3: Cross multiply
    5,722.20x = 8,589.70 × 3,123.80
  4. Step 4: Simplify right side
    5,722.20x = 26,832,504.86
  5. Step 5: Solve for x
    x = 26,832,504.86/5,722.20
  6. Step 6: Final answer
    x = 4,689.19

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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.