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Finding the Fourth Proportional to 2,118.83, 3,177.63 and 732.11

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Solution

The fourth proportional to 2,118.83, 3,177.63 and 732.11 is: 1,097.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,118.83 : 3,177.63 = 732.11 : x
  2. Step 2: Convert to fraction form
    2,118.83/3,177.63 = 732.11/x
  3. Step 3: Cross multiply
    2,118.83x = 3,177.63 × 732.11
  4. Step 4: Simplify right side
    2,118.83x = 2,326,358.81
  5. Step 5: Solve for x
    x = 2,326,358.81/2,118.83
  6. Step 6: Final answer
    x = 1,097.95

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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.