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Finding the Fourth Proportional to 2,407.28, 3,611.04 and 868.28

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Solution

The fourth proportional to 2,407.28, 3,611.04 and 868.28 is: 1,302.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,407.28 : 3,611.04 = 868.28 : x
  2. Step 2: Convert to fraction form
    2,407.28/3,611.04 = 868.28/x
  3. Step 3: Cross multiply
    2,407.28x = 3,611.04 × 868.28
  4. Step 4: Simplify right side
    2,407.28x = 3,135,393.81
  5. Step 5: Solve for x
    x = 3,135,393.81/2,407.28
  6. Step 6: Final answer
    x = 1,302.46

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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.