Home / 2,516.91-3,768.36-1,281.66

Finding the Fourth Proportional to 2,516.91, 3,768.36 and 1,281.66

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Solution

The fourth proportional to 2,516.91, 3,768.36 and 1,281.66 is: 1,918.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,516.91 : 3,768.36 = 1,281.66 : x
  2. Step 2: Convert to fraction form
    2,516.91/3,768.36 = 1,281.66/x
  3. Step 3: Cross multiply
    2,516.91x = 3,768.36 × 1,281.66
  4. Step 4: Simplify right side
    2,516.91x = 4,829,756.28
  5. Step 5: Solve for x
    x = 4,829,756.28/2,516.91
  6. Step 6: Final answer
    x = 1,918.92

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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.