Home / 2,728.20-4,097.10-2,641.80

Finding the Fourth Proportional to 2,728.20, 4,097.10 and 2,641.80

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Solution

The fourth proportional to 2,728.20, 4,097.10 and 2,641.80 is: 3,967.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,728.20 : 4,097.10 = 2,641.80 : x
  2. Step 2: Convert to fraction form
    2,728.20/4,097.10 = 2,641.80/x
  3. Step 3: Cross multiply
    2,728.20x = 4,097.10 × 2,641.80
  4. Step 4: Simplify right side
    2,728.20x = 10,823,718.78
  5. Step 5: Solve for x
    x = 10,823,718.78/2,728.20
  6. Step 6: Final answer
    x = 3,967.35

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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.