Home / 2,631.04-3,948.28-1,399.34

Finding the Fourth Proportional to 2,631.04, 3,948.28 and 1,399.34

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Solution

The fourth proportional to 2,631.04, 3,948.28 and 1,399.34 is: 2,099.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,631.04 : 3,948.28 = 1,399.34 : x
  2. Step 2: Convert to fraction form
    2,631.04/3,948.28 = 1,399.34/x
  3. Step 3: Cross multiply
    2,631.04x = 3,948.28 × 1,399.34
  4. Step 4: Simplify right side
    2,631.04x = 5,524,986.14
  5. Step 5: Solve for x
    x = 5,524,986.14/2,631.04
  6. Step 6: Final answer
    x = 2,099.92

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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.