Home / 3,065.10-4,229.55-2,121.90

Finding the Fourth Proportional to 3,065.10, 4,229.55 and 2,121.90

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Solution

The fourth proportional to 3,065.10, 4,229.55 and 2,121.90 is: 2,928.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,065.10 : 4,229.55 = 2,121.90 : x
  2. Step 2: Convert to fraction form
    3,065.10/4,229.55 = 2,121.90/x
  3. Step 3: Cross multiply
    3,065.10x = 4,229.55 × 2,121.90
  4. Step 4: Simplify right side
    3,065.10x = 8,974,682.15
  5. Step 5: Solve for x
    x = 8,974,682.15/3,065.10
  6. Step 6: Final answer
    x = 2,928.02

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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.