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Finding the Fourth Proportional to 2,927.83, 4,391.10 and 847.38

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Solution

The fourth proportional to 2,927.83, 4,391.10 and 847.38 is: 1,270.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,927.83 : 4,391.10 = 847.38 : x
  2. Step 2: Convert to fraction form
    2,927.83/4,391.10 = 847.38/x
  3. Step 3: Cross multiply
    2,927.83x = 4,391.10 × 847.38
  4. Step 4: Simplify right side
    2,927.83x = 3,720,915.10
  5. Step 5: Solve for x
    x = 3,720,915.10/2,927.83
  6. Step 6: Final answer
    x = 1,270.88

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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.