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Finding the Fourth Proportional to 2,611.92, 3,918.45 and 968.46

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Solution

The fourth proportional to 2,611.92, 3,918.45 and 968.46 is: 1,452.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,611.92 : 3,918.45 = 968.46 : x
  2. Step 2: Convert to fraction form
    2,611.92/3,918.45 = 968.46/x
  3. Step 3: Cross multiply
    2,611.92x = 3,918.45 × 968.46
  4. Step 4: Simplify right side
    2,611.92x = 3,794,862.09
  5. Step 5: Solve for x
    x = 3,794,862.09/2,611.92
  6. Step 6: Final answer
    x = 1,452.90

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1.5x scale

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.