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Finding the Fourth Proportional to 3,391.65, 4,679.76 and 2,274

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Solution

The fourth proportional to 3,391.65, 4,679.76 and 2,274 is: 3,137.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,391.65 : 4,679.76 = 2,274 : x
  2. Step 2: Convert to fraction form
    3,391.65/4,679.76 = 2,274/x
  3. Step 3: Cross multiply
    3,391.65x = 4,679.76 × 2,274
  4. Step 4: Simplify right side
    3,391.65x = 10,641,774.24
  5. Step 5: Solve for x
    x = 10,641,774.24/3,391.65
  6. Step 6: Final answer
    x = 3,137.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.