Home / 3,686.08-5,517.78-2,756.20

Finding the Fourth Proportional to 3,686.08, 5,517.78 and 2,756.20

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Solution

The fourth proportional to 3,686.08, 5,517.78 and 2,756.20 is: 4,125.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,686.08 : 5,517.78 = 2,756.20 : x
  2. Step 2: Convert to fraction form
    3,686.08/5,517.78 = 2,756.20/x
  3. Step 3: Cross multiply
    3,686.08x = 5,517.78 × 2,756.20
  4. Step 4: Simplify right side
    3,686.08x = 15,208,105.24
  5. Step 5: Solve for x
    x = 15,208,105.24/3,686.08
  6. Step 6: Final answer
    x = 4,125.82

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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.