Home / 3,311.28-4,967.88-1,580.88

Finding the Fourth Proportional to 3,311.28, 4,967.88 and 1,580.88

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Solution

The fourth proportional to 3,311.28, 4,967.88 and 1,580.88 is: 2,371.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,311.28 : 4,967.88 = 1,580.88 : x
  2. Step 2: Convert to fraction form
    3,311.28/4,967.88 = 1,580.88/x
  3. Step 3: Cross multiply
    3,311.28x = 4,967.88 × 1,580.88
  4. Step 4: Simplify right side
    3,311.28x = 7,853,622.13
  5. Step 5: Solve for x
    x = 7,853,622.13/3,311.28
  6. Step 6: Final answer
    x = 2,371.78

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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.