Home / 3,964.10-5,470.38-2,195.78

Finding the Fourth Proportional to 3,964.10, 5,470.38 and 2,195.78

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Solution

The fourth proportional to 3,964.10, 5,470.38 and 2,195.78 is: 3,030.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,964.10 : 5,470.38 = 2,195.78 : x
  2. Step 2: Convert to fraction form
    3,964.10/5,470.38 = 2,195.78/x
  3. Step 3: Cross multiply
    3,964.10x = 5,470.38 × 2,195.78
  4. Step 4: Simplify right side
    3,964.10x = 12,011,751.00
  5. Step 5: Solve for x
    x = 12,011,751.00/3,964.10
  6. Step 6: Final answer
    x = 3,030.13

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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.