Home / 2,219.78-3,329.68-1,251.84

Finding the Fourth Proportional to 2,219.78, 3,329.68 and 1,251.84

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Solution

The fourth proportional to 2,219.78, 3,329.68 and 1,251.84 is: 1,877.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,219.78 : 3,329.68 = 1,251.84 : x
  2. Step 2: Convert to fraction form
    2,219.78/3,329.68 = 1,251.84/x
  3. Step 3: Cross multiply
    2,219.78x = 3,329.68 × 1,251.84
  4. Step 4: Simplify right side
    2,219.78x = 4,168,226.61
  5. Step 5: Solve for x
    x = 4,168,226.61/2,219.78
  6. Step 6: Final answer
    x = 1,877.77

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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.