Home / 3,100.20-4,280.58-2,169.96

Finding the Fourth Proportional to 3,100.20, 4,280.58 and 2,169.96

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Solution

The fourth proportional to 3,100.20, 4,280.58 and 2,169.96 is: 2,996.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,100.20 : 4,280.58 = 2,169.96 : x
  2. Step 2: Convert to fraction form
    3,100.20/4,280.58 = 2,169.96/x
  3. Step 3: Cross multiply
    3,100.20x = 4,280.58 × 2,169.96
  4. Step 4: Simplify right side
    3,100.20x = 9,288,687.38
  5. Step 5: Solve for x
    x = 9,288,687.38/3,100.20
  6. Step 6: Final answer
    x = 2,996.16

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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.