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Finding the Fourth Proportional to 2,347, 3,521.20 and 886.38

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Solution

The fourth proportional to 2,347, 3,521.20 and 886.38 is: 1,329.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,347 : 3,521.20 = 886.38 : x
  2. Step 2: Convert to fraction form
    2,347/3,521.20 = 886.38/x
  3. Step 3: Cross multiply
    2,347x = 3,521.20 × 886.38
  4. Step 4: Simplify right side
    2,347x = 3,121,121.26
  5. Step 5: Solve for x
    x = 3,121,121.26/2,347
  6. Step 6: Final answer
    x = 1,329.83

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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.