Home / 5,612.45-8,422.34-2,149.70

Finding the Fourth Proportional to 5,612.45, 8,422.34 and 2,149.70

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Solution

The fourth proportional to 5,612.45, 8,422.34 and 2,149.70 is: 3,225.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,612.45 : 8,422.34 = 2,149.70 : x
  2. Step 2: Convert to fraction form
    5,612.45/8,422.34 = 2,149.70/x
  3. Step 3: Cross multiply
    5,612.45x = 8,422.34 × 2,149.70
  4. Step 4: Simplify right side
    5,612.45x = 18,105,451.44
  5. Step 5: Solve for x
    x = 18,105,451.44/5,612.45
  6. Step 6: Final answer
    x = 3,225.95

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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.