Home / 5,612.31-8,422.65-2,105.55

Finding the Fourth Proportional to 5,612.31, 8,422.65 and 2,105.55

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Solution

The fourth proportional to 5,612.31, 8,422.65 and 2,105.55 is: 3,159.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,612.31 : 8,422.65 = 2,105.55 : x
  2. Step 2: Convert to fraction form
    5,612.31/8,422.65 = 2,105.55/x
  3. Step 3: Cross multiply
    5,612.31x = 8,422.65 × 2,105.55
  4. Step 4: Simplify right side
    5,612.31x = 17,734,310.71
  5. Step 5: Solve for x
    x = 17,734,310.71/5,612.31
  6. Step 6: Final answer
    x = 3,159.90

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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.