Home / 2,945.80-4,062.78-2,149.12

Finding the Fourth Proportional to 2,945.80, 4,062.78 and 2,149.12

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Solution

The fourth proportional to 2,945.80, 4,062.78 and 2,149.12 is: 2,964.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,945.80 : 4,062.78 = 2,149.12 : x
  2. Step 2: Convert to fraction form
    2,945.80/4,062.78 = 2,149.12/x
  3. Step 3: Cross multiply
    2,945.80x = 4,062.78 × 2,149.12
  4. Step 4: Simplify right side
    2,945.80x = 8,731,401.75
  5. Step 5: Solve for x
    x = 8,731,401.75/2,945.80
  6. Step 6: Final answer
    x = 2,964.02

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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.