Home / 3,638.08-5,460.36-1,691.38

Finding the Fourth Proportional to 3,638.08, 5,460.36 and 1,691.38

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Solution

The fourth proportional to 3,638.08, 5,460.36 and 1,691.38 is: 2,538.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,638.08 : 5,460.36 = 1,691.38 : x
  2. Step 2: Convert to fraction form
    3,638.08/5,460.36 = 1,691.38/x
  3. Step 3: Cross multiply
    3,638.08x = 5,460.36 × 1,691.38
  4. Step 4: Simplify right side
    3,638.08x = 9,235,543.70
  5. Step 5: Solve for x
    x = 9,235,543.70/3,638.08
  6. Step 6: Final answer
    x = 2,538.58

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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.