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Finding the Fourth Proportional to 2,175.92, 3,264.96 and 943.16

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Solution

The fourth proportional to 2,175.92, 3,264.96 and 943.16 is: 1,415.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,175.92 : 3,264.96 = 943.16 : x
  2. Step 2: Convert to fraction form
    2,175.92/3,264.96 = 943.16/x
  3. Step 3: Cross multiply
    2,175.92x = 3,264.96 × 943.16
  4. Step 4: Simplify right side
    2,175.92x = 3,079,379.67
  5. Step 5: Solve for x
    x = 3,079,379.67/2,175.92
  6. Step 6: Final answer
    x = 1,415.21

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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.