Home / 3,612.68-5,418.12-1,391.06

Finding the Fourth Proportional to 3,612.68, 5,418.12 and 1,391.06

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Solution

The fourth proportional to 3,612.68, 5,418.12 and 1,391.06 is: 2,086.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,612.68 : 5,418.12 = 1,391.06 : x
  2. Step 2: Convert to fraction form
    3,612.68/5,418.12 = 1,391.06/x
  3. Step 3: Cross multiply
    3,612.68x = 5,418.12 × 1,391.06
  4. Step 4: Simplify right side
    3,612.68x = 7,536,930.01
  5. Step 5: Solve for x
    x = 7,536,930.01/3,612.68
  6. Step 6: Final answer
    x = 2,086.24

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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.