Home / 1,638.20-2,251.30-1,562.06

Finding the Fourth Proportional to 1,638.20, 2,251.30 and 1,562.06

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Solution

The fourth proportional to 1,638.20, 2,251.30 and 1,562.06 is: 2,146.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638.20 : 2,251.30 = 1,562.06 : x
  2. Step 2: Convert to fraction form
    1,638.20/2,251.30 = 1,562.06/x
  3. Step 3: Cross multiply
    1,638.20x = 2,251.30 × 1,562.06
  4. Step 4: Simplify right side
    1,638.20x = 3,516,665.68
  5. Step 5: Solve for x
    x = 3,516,665.68/1,638.20
  6. Step 6: Final answer
    x = 2,146.66

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.