Home / 6,638.28-9,958.72-2,195.76

Finding the Fourth Proportional to 6,638.28, 9,958.72 and 2,195.76

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Solution

The fourth proportional to 6,638.28, 9,958.72 and 2,195.76 is: 3,294.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,638.28 : 9,958.72 = 2,195.76 : x
  2. Step 2: Convert to fraction form
    6,638.28/9,958.72 = 2,195.76/x
  3. Step 3: Cross multiply
    6,638.28x = 9,958.72 × 2,195.76
  4. Step 4: Simplify right side
    6,638.28x = 21,866,959.03
  5. Step 5: Solve for x
    x = 21,866,959.03/6,638.28
  6. Step 6: Final answer
    x = 3,294.07

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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.