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Finding the Fourth Proportional to 3,660.82, 5,491.24 and 887.49

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Solution

The fourth proportional to 3,660.82, 5,491.24 and 887.49 is: 1,331.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,660.82 : 5,491.24 = 887.49 : x
  2. Step 2: Convert to fraction form
    3,660.82/5,491.24 = 887.49/x
  3. Step 3: Cross multiply
    3,660.82x = 5,491.24 × 887.49
  4. Step 4: Simplify right side
    3,660.82x = 4,873,420.59
  5. Step 5: Solve for x
    x = 4,873,420.59/3,660.82
  6. Step 6: Final answer
    x = 1,331.24

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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.