Home / 3,387.76-4,676.40-2,209.12

Finding the Fourth Proportional to 3,387.76, 4,676.40 and 2,209.12

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Solution

The fourth proportional to 3,387.76, 4,676.40 and 2,209.12 is: 3,049.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,387.76 : 4,676.40 = 2,209.12 : x
  2. Step 2: Convert to fraction form
    3,387.76/4,676.40 = 2,209.12/x
  3. Step 3: Cross multiply
    3,387.76x = 4,676.40 × 2,209.12
  4. Step 4: Simplify right side
    3,387.76x = 10,330,728.77
  5. Step 5: Solve for x
    x = 10,330,728.77/3,387.76
  6. Step 6: Final answer
    x = 3,049.43

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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.