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Finding the Fourth Proportional to 2,822.20, 4,233.42 and 874.42

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Solution

The fourth proportional to 2,822.20, 4,233.42 and 874.42 is: 1,311.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,822.20 : 4,233.42 = 874.42 : x
  2. Step 2: Convert to fraction form
    2,822.20/4,233.42 = 874.42/x
  3. Step 3: Cross multiply
    2,822.20x = 4,233.42 × 874.42
  4. Step 4: Simplify right side
    2,822.20x = 3,701,787.12
  5. Step 5: Solve for x
    x = 3,701,787.12/2,822.20
  6. Step 6: Final answer
    x = 1,311.67

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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.