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Finding the Fourth Proportional to 2,329.12, 3,493.86 and 868.06

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Solution

The fourth proportional to 2,329.12, 3,493.86 and 868.06 is: 1,302.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,329.12 : 3,493.86 = 868.06 : x
  2. Step 2: Convert to fraction form
    2,329.12/3,493.86 = 868.06/x
  3. Step 3: Cross multiply
    2,329.12x = 3,493.86 × 868.06
  4. Step 4: Simplify right side
    2,329.12x = 3,032,880.11
  5. Step 5: Solve for x
    x = 3,032,880.11/2,329.12
  6. Step 6: Final answer
    x = 1,302.16

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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.