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Finding the Fourth Proportional to 5,243.87, 7,236.57 and 2,853.87

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Solution

The fourth proportional to 5,243.87, 7,236.57 and 2,853.87 is: 3,938.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,243.87 : 7,236.57 = 2,853.87 : x
  2. Step 2: Convert to fraction form
    5,243.87/7,236.57 = 2,853.87/x
  3. Step 3: Cross multiply
    5,243.87x = 7,236.57 × 2,853.87
  4. Step 4: Simplify right side
    5,243.87x = 20,652,230.03
  5. Step 5: Solve for x
    x = 20,652,230.03/5,243.87
  6. Step 6: Final answer
    x = 3,938.36

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Double scale
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1.5x scale

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.