Home / 2,132.60-3,198.88-651.81

Finding the Fourth Proportional to 2,132.60, 3,198.88 and 651.81

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Solution

The fourth proportional to 2,132.60, 3,198.88 and 651.81 is: 977.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,132.60 : 3,198.88 = 651.81 : x
  2. Step 2: Convert to fraction form
    2,132.60/3,198.88 = 651.81/x
  3. Step 3: Cross multiply
    2,132.60x = 3,198.88 × 651.81
  4. Step 4: Simplify right side
    2,132.60x = 2,085,071.12
  5. Step 5: Solve for x
    x = 2,085,071.12/2,132.60
  6. Step 6: Final answer
    x = 977.72

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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.