Home / 3,217.92-4,442.88-2,169.60

Finding the Fourth Proportional to 3,217.92, 4,442.88 and 2,169.60

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Solution

The fourth proportional to 3,217.92, 4,442.88 and 2,169.60 is: 2,995.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,217.92 : 4,442.88 = 2,169.60 : x
  2. Step 2: Convert to fraction form
    3,217.92/4,442.88 = 2,169.60/x
  3. Step 3: Cross multiply
    3,217.92x = 4,442.88 × 2,169.60
  4. Step 4: Simplify right side
    3,217.92x = 9,639,272.45
  5. Step 5: Solve for x
    x = 9,639,272.45/3,217.92
  6. Step 6: Final answer
    x = 2,995.50

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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.