Home / 3,065.20-4,229.96-2,280.40

Finding the Fourth Proportional to 3,065.20, 4,229.96 and 2,280.40

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Solution

The fourth proportional to 3,065.20, 4,229.96 and 2,280.40 is: 3,146.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,065.20 : 4,229.96 = 2,280.40 : x
  2. Step 2: Convert to fraction form
    3,065.20/4,229.96 = 2,280.40/x
  3. Step 3: Cross multiply
    3,065.20x = 4,229.96 × 2,280.40
  4. Step 4: Simplify right side
    3,065.20x = 9,646,000.78
  5. Step 5: Solve for x
    x = 9,646,000.78/3,065.20
  6. Step 6: Final answer
    x = 3,146.94

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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.