Home / 3,638.38-5,020.74-2,045.28

Finding the Fourth Proportional to 3,638.38, 5,020.74 and 2,045.28

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Solution

The fourth proportional to 3,638.38, 5,020.74 and 2,045.28 is: 2,822.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,638.38 : 5,020.74 = 2,045.28 : x
  2. Step 2: Convert to fraction form
    3,638.38/5,020.74 = 2,045.28/x
  3. Step 3: Cross multiply
    3,638.38x = 5,020.74 × 2,045.28
  4. Step 4: Simplify right side
    3,638.38x = 10,268,819.11
  5. Step 5: Solve for x
    x = 10,268,819.11/3,638.38
  6. Step 6: Final answer
    x = 2,822.36

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1.5x scale

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.