Home / 3,155.78-4,729.61-1,308.17

Finding the Fourth Proportional to 3,155.78, 4,729.61 and 1,308.17

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Solution

The fourth proportional to 3,155.78, 4,729.61 and 1,308.17 is: 1,960.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,155.78 : 4,729.61 = 1,308.17 : x
  2. Step 2: Convert to fraction form
    3,155.78/4,729.61 = 1,308.17/x
  3. Step 3: Cross multiply
    3,155.78x = 4,729.61 × 1,308.17
  4. Step 4: Simplify right side
    3,155.78x = 6,187,103.72
  5. Step 5: Solve for x
    x = 6,187,103.72/3,155.78
  6. Step 6: Final answer
    x = 1,960.57

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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.