Home / 3,688.38-5,531.40-1,348.09

Finding the Fourth Proportional to 3,688.38, 5,531.40 and 1,348.09

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Solution

The fourth proportional to 3,688.38, 5,531.40 and 1,348.09 is: 2,021.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,688.38 : 5,531.40 = 1,348.09 : x
  2. Step 2: Convert to fraction form
    3,688.38/5,531.40 = 1,348.09/x
  3. Step 3: Cross multiply
    3,688.38x = 5,531.40 × 1,348.09
  4. Step 4: Simplify right side
    3,688.38x = 7,456,811.20
  5. Step 5: Solve for x
    x = 7,456,811.20/3,688.38
  6. Step 6: Final answer
    x = 2,021.70

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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.