Home / 2,321.22-3,482.24-1,280.78

Finding the Fourth Proportional to 2,321.22, 3,482.24 and 1,280.78

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Solution

The fourth proportional to 2,321.22, 3,482.24 and 1,280.78 is: 1,921.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,321.22 : 3,482.24 = 1,280.78 : x
  2. Step 2: Convert to fraction form
    2,321.22/3,482.24 = 1,280.78/x
  3. Step 3: Cross multiply
    2,321.22x = 3,482.24 × 1,280.78
  4. Step 4: Simplify right side
    2,321.22x = 4,459,959.53
  5. Step 5: Solve for x
    x = 4,459,959.53/2,321.22
  6. Step 6: Final answer
    x = 1,921.39

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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.