Home / 3,147.70-4,339.10-1,966.72

Finding the Fourth Proportional to 3,147.70, 4,339.10 and 1,966.72

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Solution

The fourth proportional to 3,147.70, 4,339.10 and 1,966.72 is: 2,711.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,147.70 : 4,339.10 = 1,966.72 : x
  2. Step 2: Convert to fraction form
    3,147.70/4,339.10 = 1,966.72/x
  3. Step 3: Cross multiply
    3,147.70x = 4,339.10 × 1,966.72
  4. Step 4: Simplify right side
    3,147.70x = 8,533,794.75
  5. Step 5: Solve for x
    x = 8,533,794.75/3,147.70
  6. Step 6: Final answer
    x = 2,711.12

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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.