Home / 3,638.10-5,020.39-2,146.84

Finding the Fourth Proportional to 3,638.10, 5,020.39 and 2,146.84

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Solution

The fourth proportional to 3,638.10, 5,020.39 and 2,146.84 is: 2,962.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,638.10 : 5,020.39 = 2,146.84 : x
  2. Step 2: Convert to fraction form
    3,638.10/5,020.39 = 2,146.84/x
  3. Step 3: Cross multiply
    3,638.10x = 5,020.39 × 2,146.84
  4. Step 4: Simplify right side
    3,638.10x = 10,777,974.07
  5. Step 5: Solve for x
    x = 10,777,974.07/3,638.10
  6. Step 6: Final answer
    x = 2,962.53

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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.