Home / 3,638.86-5,020.39-2,222.18

Finding the Fourth Proportional to 3,638.86, 5,020.39 and 2,222.18

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Solution

The fourth proportional to 3,638.86, 5,020.39 and 2,222.18 is: 3,065.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,638.86 : 5,020.39 = 2,222.18 : x
  2. Step 2: Convert to fraction form
    3,638.86/5,020.39 = 2,222.18/x
  3. Step 3: Cross multiply
    3,638.86x = 5,020.39 × 2,222.18
  4. Step 4: Simplify right side
    3,638.86x = 11,156,210.25
  5. Step 5: Solve for x
    x = 11,156,210.25/3,638.86
  6. Step 6: Final answer
    x = 3,065.85

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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.