Home / 3,211.28-4,793.78-2,970.80

Finding the Fourth Proportional to 3,211.28, 4,793.78 and 2,970.80

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Solution

The fourth proportional to 3,211.28, 4,793.78 and 2,970.80 is: 4,434.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,211.28 : 4,793.78 = 2,970.80 : x
  2. Step 2: Convert to fraction form
    3,211.28/4,793.78 = 2,970.80/x
  3. Step 3: Cross multiply
    3,211.28x = 4,793.78 × 2,970.80
  4. Step 4: Simplify right side
    3,211.28x = 14,241,361.62
  5. Step 5: Solve for x
    x = 14,241,361.62/3,211.28
  6. Step 6: Final answer
    x = 4,434.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.