Home / 3,415.10-5,114.55-2,102.90

Finding the Fourth Proportional to 3,415.10, 5,114.55 and 2,102.90

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Solution

The fourth proportional to 3,415.10, 5,114.55 and 2,102.90 is: 3,149.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,415.10 : 5,114.55 = 2,102.90 : x
  2. Step 2: Convert to fraction form
    3,415.10/5,114.55 = 2,102.90/x
  3. Step 3: Cross multiply
    3,415.10x = 5,114.55 × 2,102.90
  4. Step 4: Simplify right side
    3,415.10x = 10,755,387.20
  5. Step 5: Solve for x
    x = 10,755,387.20/3,415.10
  6. Step 6: Final answer
    x = 3,149.36

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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.