Home / 2,008.20-3,013.38-1,278.12

Finding the Fourth Proportional to 2,008.20, 3,013.38 and 1,278.12

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Solution

The fourth proportional to 2,008.20, 3,013.38 and 1,278.12 is: 1,917.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,008.20 : 3,013.38 = 1,278.12 : x
  2. Step 2: Convert to fraction form
    2,008.20/3,013.38 = 1,278.12/x
  3. Step 3: Cross multiply
    2,008.20x = 3,013.38 × 1,278.12
  4. Step 4: Simplify right side
    2,008.20x = 3,851,461.25
  5. Step 5: Solve for x
    x = 3,851,461.25/2,008.20
  6. Step 6: Final answer
    x = 1,917.87

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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.