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Finding the Fourth Proportional to 5,249.81, 7,874.72 and 1,354.22

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Solution

The fourth proportional to 5,249.81, 7,874.72 and 1,354.22 is: 2,031.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,249.81 : 7,874.72 = 1,354.22 : x
  2. Step 2: Convert to fraction form
    5,249.81/7,874.72 = 1,354.22/x
  3. Step 3: Cross multiply
    5,249.81x = 7,874.72 × 1,354.22
  4. Step 4: Simplify right side
    5,249.81x = 10,664,091.78
  5. Step 5: Solve for x
    x = 10,664,091.78/5,249.81
  6. Step 6: Final answer
    x = 2,031.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.