Home / 3,612.40-5,418.60-3,247.90

Finding the Fourth Proportional to 3,612.40, 5,418.60 and 3,247.90

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Solution

The fourth proportional to 3,612.40, 5,418.60 and 3,247.90 is: 4,871.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,612.40 : 5,418.60 = 3,247.90 : x
  2. Step 2: Convert to fraction form
    3,612.40/5,418.60 = 3,247.90/x
  3. Step 3: Cross multiply
    3,612.40x = 5,418.60 × 3,247.90
  4. Step 4: Simplify right side
    3,612.40x = 17,599,070.94
  5. Step 5: Solve for x
    x = 17,599,070.94/3,612.40
  6. Step 6: Final answer
    x = 4,871.85

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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.