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Finding the Fourth Proportional to 3,660.85, 5,491.28 and 3,552.85

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Solution

The fourth proportional to 3,660.85, 5,491.28 and 3,552.85 is: 5,329.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,660.85 : 5,491.28 = 3,552.85 : x
  2. Step 2: Convert to fraction form
    3,660.85/5,491.28 = 3,552.85/x
  3. Step 3: Cross multiply
    3,660.85x = 5,491.28 × 3,552.85
  4. Step 4: Simplify right side
    3,660.85x = 19,509,676.38
  5. Step 5: Solve for x
    x = 19,509,676.38/3,660.85
  6. Step 6: Final answer
    x = 5,329.28

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Half scale
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Double scale
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Similar ratio
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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.