Home / 3,177.57-4,385.23-1,999.02

Finding the Fourth Proportional to 3,177.57, 4,385.23 and 1,999.02

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Solution

The fourth proportional to 3,177.57, 4,385.23 and 1,999.02 is: 2,758.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,177.57 : 4,385.23 = 1,999.02 : x
  2. Step 2: Convert to fraction form
    3,177.57/4,385.23 = 1,999.02/x
  3. Step 3: Cross multiply
    3,177.57x = 4,385.23 × 1,999.02
  4. Step 4: Simplify right side
    3,177.57x = 8,766,173.92
  5. Step 5: Solve for x
    x = 8,766,173.92/3,177.57
  6. Step 6: Final answer
    x = 2,758.76

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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.