Home / 2,222.40-3,329.20-1,948.80

Finding the Fourth Proportional to 2,222.40, 3,329.20 and 1,948.80

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Solution

The fourth proportional to 2,222.40, 3,329.20 and 1,948.80 is: 2,919.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,222.40 : 3,329.20 = 1,948.80 : x
  2. Step 2: Convert to fraction form
    2,222.40/3,329.20 = 1,948.80/x
  3. Step 3: Cross multiply
    2,222.40x = 3,329.20 × 1,948.80
  4. Step 4: Simplify right side
    2,222.40x = 6,487,944.96
  5. Step 5: Solve for x
    x = 6,487,944.96/2,222.40
  6. Step 6: Final answer
    x = 2,919.34

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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.