Home / 2,097.38-3,146.45-864.11

Finding the Fourth Proportional to 2,097.38, 3,146.45 and 864.11

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Solution

The fourth proportional to 2,097.38, 3,146.45 and 864.11 is: 1,296.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,097.38 : 3,146.45 = 864.11 : x
  2. Step 2: Convert to fraction form
    2,097.38/3,146.45 = 864.11/x
  3. Step 3: Cross multiply
    2,097.38x = 3,146.45 × 864.11
  4. Step 4: Simplify right side
    2,097.38x = 2,718,863.72
  5. Step 5: Solve for x
    x = 2,718,863.72/2,097.38
  6. Step 6: Final answer
    x = 1,296.31

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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.