Home / 3,710.68-5,561.20-2,778.90

Finding the Fourth Proportional to 3,710.68, 5,561.20 and 2,778.90

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Solution

The fourth proportional to 3,710.68, 5,561.20 and 2,778.90 is: 4,164.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,710.68 : 5,561.20 = 2,778.90 : x
  2. Step 2: Convert to fraction form
    3,710.68/5,561.20 = 2,778.90/x
  3. Step 3: Cross multiply
    3,710.68x = 5,561.20 × 2,778.90
  4. Step 4: Simplify right side
    3,710.68x = 15,454,018.68
  5. Step 5: Solve for x
    x = 15,454,018.68/3,710.68
  6. Step 6: Final answer
    x = 4,164.74

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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.