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Finding the Fourth Proportional to 5,915.08, 8,865.08 and 3,143.08

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Solution

The fourth proportional to 5,915.08, 8,865.08 and 3,143.08 is: 4,710.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,915.08 : 8,865.08 = 3,143.08 : x
  2. Step 2: Convert to fraction form
    5,915.08/8,865.08 = 3,143.08/x
  3. Step 3: Cross multiply
    5,915.08x = 8,865.08 × 3,143.08
  4. Step 4: Simplify right side
    5,915.08x = 27,863,595.61
  5. Step 5: Solve for x
    x = 27,863,595.61/5,915.08
  6. Step 6: Final answer
    x = 4,710.61

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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.