Home / 2,631.32-3,631.80-2,188.46

Finding the Fourth Proportional to 2,631.32, 3,631.80 and 2,188.46

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Solution

The fourth proportional to 2,631.32, 3,631.80 and 2,188.46 is: 3,020.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,631.32 : 3,631.80 = 2,188.46 : x
  2. Step 2: Convert to fraction form
    2,631.32/3,631.80 = 2,188.46/x
  3. Step 3: Cross multiply
    2,631.32x = 3,631.80 × 2,188.46
  4. Step 4: Simplify right side
    2,631.32x = 7,948,049.03
  5. Step 5: Solve for x
    x = 7,948,049.03/2,631.32
  6. Step 6: Final answer
    x = 3,020.56

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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.