Home / 5,428.11-8,139.41-2,650.62

Finding the Fourth Proportional to 5,428.11, 8,139.41 and 2,650.62

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Solution

The fourth proportional to 5,428.11, 8,139.41 and 2,650.62 is: 3,974.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428.11 : 8,139.41 = 2,650.62 : x
  2. Step 2: Convert to fraction form
    5,428.11/8,139.41 = 2,650.62/x
  3. Step 3: Cross multiply
    5,428.11x = 8,139.41 × 2,650.62
  4. Step 4: Simplify right side
    5,428.11x = 21,574,469.68
  5. Step 5: Solve for x
    x = 21,574,469.68/5,428.11
  6. Step 6: Final answer
    x = 3,974.58

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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.