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Finding the Fourth Proportional to 2,077.92, 3,116.88 and 617.22

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Solution

The fourth proportional to 2,077.92, 3,116.88 and 617.22 is: 925.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,077.92 : 3,116.88 = 617.22 : x
  2. Step 2: Convert to fraction form
    2,077.92/3,116.88 = 617.22/x
  3. Step 3: Cross multiply
    2,077.92x = 3,116.88 × 617.22
  4. Step 4: Simplify right side
    2,077.92x = 1,923,800.67
  5. Step 5: Solve for x
    x = 1,923,800.67/2,077.92
  6. Step 6: Final answer
    x = 925.83

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Double scale
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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.