Home / 2,799.85-4,191.67-2,109.43

Finding the Fourth Proportional to 2,799.85, 4,191.67 and 2,109.43

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Solution

The fourth proportional to 2,799.85, 4,191.67 and 2,109.43 is: 3,158.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,799.85 : 4,191.67 = 2,109.43 : x
  2. Step 2: Convert to fraction form
    2,799.85/4,191.67 = 2,109.43/x
  3. Step 3: Cross multiply
    2,799.85x = 4,191.67 × 2,109.43
  4. Step 4: Simplify right side
    2,799.85x = 8,842,034.45
  5. Step 5: Solve for x
    x = 8,842,034.45/2,799.85
  6. Step 6: Final answer
    x = 3,158.04

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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.