Home / 4,211.28-6,315.84-2,019.60

Finding the Fourth Proportional to 4,211.28, 6,315.84 and 2,019.60

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Solution

The fourth proportional to 4,211.28, 6,315.84 and 2,019.60 is: 3,028.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,211.28 : 6,315.84 = 2,019.60 : x
  2. Step 2: Convert to fraction form
    4,211.28/6,315.84 = 2,019.60/x
  3. Step 3: Cross multiply
    4,211.28x = 6,315.84 × 2,019.60
  4. Step 4: Simplify right side
    4,211.28x = 12,755,470.46
  5. Step 5: Solve for x
    x = 12,755,470.46/4,211.28
  6. Step 6: Final answer
    x = 3,028.88

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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.