Home / 2,770.11-3,820.91-2,209.59

Finding the Fourth Proportional to 2,770.11, 3,820.91 and 2,209.59

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Solution

The fourth proportional to 2,770.11, 3,820.91 and 2,209.59 is: 3,047.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,770.11 : 3,820.91 = 2,209.59 : x
  2. Step 2: Convert to fraction form
    2,770.11/3,820.91 = 2,209.59/x
  3. Step 3: Cross multiply
    2,770.11x = 3,820.91 × 2,209.59
  4. Step 4: Simplify right side
    2,770.11x = 8,442,633.48
  5. Step 5: Solve for x
    x = 8,442,633.48/2,770.11
  6. Step 6: Final answer
    x = 3,047.76

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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.