Home / 2,114.10-3,171.15-1,422.90

Finding the Fourth Proportional to 2,114.10, 3,171.15 and 1,422.90

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Solution

The fourth proportional to 2,114.10, 3,171.15 and 1,422.90 is: 2,134.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,114.10 : 3,171.15 = 1,422.90 : x
  2. Step 2: Convert to fraction form
    2,114.10/3,171.15 = 1,422.90/x
  3. Step 3: Cross multiply
    2,114.10x = 3,171.15 × 1,422.90
  4. Step 4: Simplify right side
    2,114.10x = 4,512,229.34
  5. Step 5: Solve for x
    x = 4,512,229.34/2,114.10
  6. Step 6: Final answer
    x = 2,134.35

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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.