Home / 3,766.20-5,661.45-2,678.10

Finding the Fourth Proportional to 3,766.20, 5,661.45 and 2,678.10

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Solution

The fourth proportional to 3,766.20, 5,661.45 and 2,678.10 is: 4,025.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,766.20 : 5,661.45 = 2,678.10 : x
  2. Step 2: Convert to fraction form
    3,766.20/5,661.45 = 2,678.10/x
  3. Step 3: Cross multiply
    3,766.20x = 5,661.45 × 2,678.10
  4. Step 4: Simplify right side
    3,766.20x = 15,161,929.25
  5. Step 5: Solve for x
    x = 15,161,929.25/3,766.20
  6. Step 6: Final answer
    x = 4,025.79

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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.