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Finding the Fourth Proportional to 3,490.96, 5,231.76 and 1,845.76

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Solution

The fourth proportional to 3,490.96, 5,231.76 and 1,845.76 is: 2,766.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,490.96 : 5,231.76 = 1,845.76 : x
  2. Step 2: Convert to fraction form
    3,490.96/5,231.76 = 1,845.76/x
  3. Step 3: Cross multiply
    3,490.96x = 5,231.76 × 1,845.76
  4. Step 4: Simplify right side
    3,490.96x = 9,656,573.34
  5. Step 5: Solve for x
    x = 9,656,573.34/3,490.96
  6. Step 6: Final answer
    x = 2,766.17

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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.