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Finding the Fourth Proportional to 3,132.13, 4,696.78 and 940.43

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Solution

The fourth proportional to 3,132.13, 4,696.78 and 940.43 is: 1,410.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,132.13 : 4,696.78 = 940.43 : x
  2. Step 2: Convert to fraction form
    3,132.13/4,696.78 = 940.43/x
  3. Step 3: Cross multiply
    3,132.13x = 4,696.78 × 940.43
  4. Step 4: Simplify right side
    3,132.13x = 4,416,992.82
  5. Step 5: Solve for x
    x = 4,416,992.82/3,132.13
  6. Step 6: Final answer
    x = 1,410.22

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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.