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Finding the Fourth Proportional to 5,247.87, 7,242.04 and 2,890.01

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Solution

The fourth proportional to 5,247.87, 7,242.04 and 2,890.01 is: 3,988.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,247.87 : 7,242.04 = 2,890.01 : x
  2. Step 2: Convert to fraction form
    5,247.87/7,242.04 = 2,890.01/x
  3. Step 3: Cross multiply
    5,247.87x = 7,242.04 × 2,890.01
  4. Step 4: Simplify right side
    5,247.87x = 20,929,568.02
  5. Step 5: Solve for x
    x = 20,929,568.02/5,247.87
  6. Step 6: Final answer
    x = 3,988.20

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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.