Home / 2,660.38-3,988.24-1,015.74

Finding the Fourth Proportional to 2,660.38, 3,988.24 and 1,015.74

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Solution

The fourth proportional to 2,660.38, 3,988.24 and 1,015.74 is: 1,522.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,660.38 : 3,988.24 = 1,015.74 : x
  2. Step 2: Convert to fraction form
    2,660.38/3,988.24 = 1,015.74/x
  3. Step 3: Cross multiply
    2,660.38x = 3,988.24 × 1,015.74
  4. Step 4: Simplify right side
    2,660.38x = 4,051,012.36
  5. Step 5: Solve for x
    x = 4,051,012.36/2,660.38
  6. Step 6: Final answer
    x = 1,522.72

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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.