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Finding the Fourth Proportional to 2,216.59, 3,324.48 and 829.78

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Solution

The fourth proportional to 2,216.59, 3,324.48 and 829.78 is: 1,244.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,216.59 : 3,324.48 = 829.78 : x
  2. Step 2: Convert to fraction form
    2,216.59/3,324.48 = 829.78/x
  3. Step 3: Cross multiply
    2,216.59x = 3,324.48 × 829.78
  4. Step 4: Simplify right side
    2,216.59x = 2,758,587.01
  5. Step 5: Solve for x
    x = 2,758,587.01/2,216.59
  6. Step 6: Final answer
    x = 1,244.52

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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.