Home / 3,187.85-4,395.20-2,280.44

Finding the Fourth Proportional to 3,187.85, 4,395.20 and 2,280.44

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Solution

The fourth proportional to 3,187.85, 4,395.20 and 2,280.44 is: 3,144.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.85 : 4,395.20 = 2,280.44 : x
  2. Step 2: Convert to fraction form
    3,187.85/4,395.20 = 2,280.44/x
  3. Step 3: Cross multiply
    3,187.85x = 4,395.20 × 2,280.44
  4. Step 4: Simplify right side
    3,187.85x = 10,022,989.47
  5. Step 5: Solve for x
    x = 10,022,989.47/3,187.85
  6. Step 6: Final answer
    x = 3,144.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.