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Finding the Fourth Proportional to 3,661.28, 5,491.92 and 2,927.42

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Solution

The fourth proportional to 3,661.28, 5,491.92 and 2,927.42 is: 4,391.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,661.28 : 5,491.92 = 2,927.42 : x
  2. Step 2: Convert to fraction form
    3,661.28/5,491.92 = 2,927.42/x
  3. Step 3: Cross multiply
    3,661.28x = 5,491.92 × 2,927.42
  4. Step 4: Simplify right side
    3,661.28x = 16,077,156.45
  5. Step 5: Solve for x
    x = 16,077,156.45/3,661.28
  6. Step 6: Final answer
    x = 4,391.13

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1.5x scale

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.