Home / 2,115.30-3,173.25-654.57

Finding the Fourth Proportional to 2,115.30, 3,173.25 and 654.57

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Solution

The fourth proportional to 2,115.30, 3,173.25 and 654.57 is: 981.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115.30 : 3,173.25 = 654.57 : x
  2. Step 2: Convert to fraction form
    2,115.30/3,173.25 = 654.57/x
  3. Step 3: Cross multiply
    2,115.30x = 3,173.25 × 654.57
  4. Step 4: Simplify right side
    2,115.30x = 2,077,098.39
  5. Step 5: Solve for x
    x = 2,077,098.39/2,115.30
  6. Step 6: Final answer
    x = 981.94

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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.