Home / 5,247.81-7,241.98-2,857.81

Finding the Fourth Proportional to 5,247.81, 7,241.98 and 2,857.81

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Solution

The fourth proportional to 5,247.81, 7,241.98 and 2,857.81 is: 3,943.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,247.81 : 7,241.98 = 2,857.81 : x
  2. Step 2: Convert to fraction form
    5,247.81/7,241.98 = 2,857.81/x
  3. Step 3: Cross multiply
    5,247.81x = 7,241.98 × 2,857.81
  4. Step 4: Simplify right side
    5,247.81x = 20,696,194.60
  5. Step 5: Solve for x
    x = 20,696,194.60/5,247.81
  6. Step 6: Final answer
    x = 3,943.78

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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.