Home / 2,820.52-4,230.63-872.67

Finding the Fourth Proportional to 2,820.52, 4,230.63 and 872.67

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Solution

The fourth proportional to 2,820.52, 4,230.63 and 872.67 is: 1,308.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,820.52 : 4,230.63 = 872.67 : x
  2. Step 2: Convert to fraction form
    2,820.52/4,230.63 = 872.67/x
  3. Step 3: Cross multiply
    2,820.52x = 4,230.63 × 872.67
  4. Step 4: Simplify right side
    2,820.52x = 3,691,959.75
  5. Step 5: Solve for x
    x = 3,691,959.75/2,820.52
  6. Step 6: Final answer
    x = 1,308.96

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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.