Home / 3,969.20-5,477.02-2,267.80

Finding the Fourth Proportional to 3,969.20, 5,477.02 and 2,267.80

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Solution

The fourth proportional to 3,969.20, 5,477.02 and 2,267.80 is: 3,129.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,969.20 : 5,477.02 = 2,267.80 : x
  2. Step 2: Convert to fraction form
    3,969.20/5,477.02 = 2,267.80/x
  3. Step 3: Cross multiply
    3,969.20x = 5,477.02 × 2,267.80
  4. Step 4: Simplify right side
    3,969.20x = 12,420,766.59
  5. Step 5: Solve for x
    x = 12,420,766.59/3,969.20
  6. Step 6: Final answer
    x = 3,129.29

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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.