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Finding the Fourth Proportional to 5,226.72, 7,212.99 and 2,868.87

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Solution

The fourth proportional to 5,226.72, 7,212.99 and 2,868.87 is: 3,959.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,226.72 : 7,212.99 = 2,868.87 : x
  2. Step 2: Convert to fraction form
    5,226.72/7,212.99 = 2,868.87/x
  3. Step 3: Cross multiply
    5,226.72x = 7,212.99 × 2,868.87
  4. Step 4: Simplify right side
    5,226.72x = 20,693,130.62
  5. Step 5: Solve for x
    x = 20,693,130.62/5,226.72
  6. Step 6: Final answer
    x = 3,959.10

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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.