Home / 3,219.78-4,442.94-1,962.66

Finding the Fourth Proportional to 3,219.78, 4,442.94 and 1,962.66

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Solution

The fourth proportional to 3,219.78, 4,442.94 and 1,962.66 is: 2,708.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,219.78 : 4,442.94 = 1,962.66 : x
  2. Step 2: Convert to fraction form
    3,219.78/4,442.94 = 1,962.66/x
  3. Step 3: Cross multiply
    3,219.78x = 4,442.94 × 1,962.66
  4. Step 4: Simplify right side
    3,219.78x = 8,719,980.62
  5. Step 5: Solve for x
    x = 8,719,980.62/3,219.78
  6. Step 6: Final answer
    x = 2,708.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.