Home / 2,631.44-3,943.92-1,399.16

Finding the Fourth Proportional to 2,631.44, 3,943.92 and 1,399.16

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Solution

The fourth proportional to 2,631.44, 3,943.92 and 1,399.16 is: 2,097.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,631.44 : 3,943.92 = 1,399.16 : x
  2. Step 2: Convert to fraction form
    2,631.44/3,943.92 = 1,399.16/x
  3. Step 3: Cross multiply
    2,631.44x = 3,943.92 × 1,399.16
  4. Step 4: Simplify right side
    2,631.44x = 5,518,175.11
  5. Step 5: Solve for x
    x = 5,518,175.11/2,631.44
  6. Step 6: Final answer
    x = 2,097.02

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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.