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Finding the Fourth Proportional to 2,000.46, 3,000.38 and 768.45

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Solution

The fourth proportional to 2,000.46, 3,000.38 and 768.45 is: 1,152.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,000.46 : 3,000.38 = 768.45 : x
  2. Step 2: Convert to fraction form
    2,000.46/3,000.38 = 768.45/x
  3. Step 3: Cross multiply
    2,000.46x = 3,000.38 × 768.45
  4. Step 4: Simplify right side
    2,000.46x = 2,305,636.87
  5. Step 5: Solve for x
    x = 2,305,636.87/2,000.46
  6. Step 6: Final answer
    x = 1,152.55

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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.