Home / 3,080.38-4,616.90-1,618.78

Finding the Fourth Proportional to 3,080.38, 4,616.90 and 1,618.78

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Solution

The fourth proportional to 3,080.38, 4,616.90 and 1,618.78 is: 2,426.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,080.38 : 4,616.90 = 1,618.78 : x
  2. Step 2: Convert to fraction form
    3,080.38/4,616.90 = 1,618.78/x
  3. Step 3: Cross multiply
    3,080.38x = 4,616.90 × 1,618.78
  4. Step 4: Simplify right side
    3,080.38x = 7,473,745.38
  5. Step 5: Solve for x
    x = 7,473,745.38/3,080.38
  6. Step 6: Final answer
    x = 2,426.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.