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Finding the Fourth Proportional to 3,623.81, 5,435.72 and 887.81

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Solution

The fourth proportional to 3,623.81, 5,435.72 and 887.81 is: 1,331.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,623.81 : 5,435.72 = 887.81 : x
  2. Step 2: Convert to fraction form
    3,623.81/5,435.72 = 887.81/x
  3. Step 3: Cross multiply
    3,623.81x = 5,435.72 × 887.81
  4. Step 4: Simplify right side
    3,623.81x = 4,825,902.38
  5. Step 5: Solve for x
    x = 4,825,902.38/3,623.81
  6. Step 6: Final answer
    x = 1,331.72

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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.