Home / 3,960.78-5,466.45-2,281.86

Finding the Fourth Proportional to 3,960.78, 5,466.45 and 2,281.86

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Solution

The fourth proportional to 3,960.78, 5,466.45 and 2,281.86 is: 3,149.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,960.78 : 5,466.45 = 2,281.86 : x
  2. Step 2: Convert to fraction form
    3,960.78/5,466.45 = 2,281.86/x
  3. Step 3: Cross multiply
    3,960.78x = 5,466.45 × 2,281.86
  4. Step 4: Simplify right side
    3,960.78x = 12,473,673.60
  5. Step 5: Solve for x
    x = 12,473,673.60/3,960.78
  6. Step 6: Final answer
    x = 3,149.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.