Home / 2,658.28-3,977.68-2,515.70

Finding the Fourth Proportional to 2,658.28, 3,977.68 and 2,515.70

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Solution

The fourth proportional to 2,658.28, 3,977.68 and 2,515.70 is: 3,764.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,658.28 : 3,977.68 = 2,515.70 : x
  2. Step 2: Convert to fraction form
    2,658.28/3,977.68 = 2,515.70/x
  3. Step 3: Cross multiply
    2,658.28x = 3,977.68 × 2,515.70
  4. Step 4: Simplify right side
    2,658.28x = 10,006,643.22
  5. Step 5: Solve for x
    x = 10,006,643.22/2,658.28
  6. Step 6: Final answer
    x = 3,764.33

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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.