Home / 5,247.78-7,241.98-2,889.92

Finding the Fourth Proportional to 5,247.78, 7,241.98 and 2,889.92

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Solution

The fourth proportional to 5,247.78, 7,241.98 and 2,889.92 is: 3,988.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,247.78 : 7,241.98 = 2,889.92 : x
  2. Step 2: Convert to fraction form
    5,247.78/7,241.98 = 2,889.92/x
  3. Step 3: Cross multiply
    5,247.78x = 7,241.98 × 2,889.92
  4. Step 4: Simplify right side
    5,247.78x = 20,928,742.84
  5. Step 5: Solve for x
    x = 20,928,742.84/5,247.78
  6. Step 6: Final answer
    x = 3,988.11

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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.