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Finding the Fourth Proportional to 2,216.68, 3,326.94 and 849.64

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Solution

The fourth proportional to 2,216.68, 3,326.94 and 849.64 is: 1,275.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,216.68 : 3,326.94 = 849.64 : x
  2. Step 2: Convert to fraction form
    2,216.68/3,326.94 = 849.64/x
  3. Step 3: Cross multiply
    2,216.68x = 3,326.94 × 849.64
  4. Step 4: Simplify right side
    2,216.68x = 2,826,701.30
  5. Step 5: Solve for x
    x = 2,826,701.30/2,216.68
  6. Step 6: Final answer
    x = 1,275.20

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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.