Home / 3,221.91-4,445.30-1,962.99

Finding the Fourth Proportional to 3,221.91, 4,445.30 and 1,962.99

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Solution

The fourth proportional to 3,221.91, 4,445.30 and 1,962.99 is: 2,708.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,221.91 : 4,445.30 = 1,962.99 : x
  2. Step 2: Convert to fraction form
    3,221.91/4,445.30 = 1,962.99/x
  3. Step 3: Cross multiply
    3,221.91x = 4,445.30 × 1,962.99
  4. Step 4: Simplify right side
    3,221.91x = 8,726,084.35
  5. Step 5: Solve for x
    x = 8,726,084.35/3,221.91
  6. Step 6: Final answer
    x = 2,708.36

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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.