Home / 3,311.10-4,568.98-1,984.78

Finding the Fourth Proportional to 3,311.10, 4,568.98 and 1,984.78

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Solution

The fourth proportional to 3,311.10, 4,568.98 and 1,984.78 is: 2,738.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,311.10 : 4,568.98 = 1,984.78 : x
  2. Step 2: Convert to fraction form
    3,311.10/4,568.98 = 1,984.78/x
  3. Step 3: Cross multiply
    3,311.10x = 4,568.98 × 1,984.78
  4. Step 4: Simplify right side
    3,311.10x = 9,068,420.12
  5. Step 5: Solve for x
    x = 9,068,420.12/3,311.10
  6. Step 6: Final answer
    x = 2,738.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.