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Finding the Fourth Proportional to 2,820.26, 4,230.52 and 768.26

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Solution

The fourth proportional to 2,820.26, 4,230.52 and 768.26 is: 1,152.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,820.26 : 4,230.52 = 768.26 : x
  2. Step 2: Convert to fraction form
    2,820.26/4,230.52 = 768.26/x
  3. Step 3: Cross multiply
    2,820.26x = 4,230.52 × 768.26
  4. Step 4: Simplify right side
    2,820.26x = 3,250,139.30
  5. Step 5: Solve for x
    x = 3,250,139.30/2,820.26
  6. Step 6: Final answer
    x = 1,152.43

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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.