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Finding the Fourth Proportional to 2,001.49, 3,000.80 and 767.86

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Solution

The fourth proportional to 2,001.49, 3,000.80 and 767.86 is: 1,151.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,001.49 : 3,000.80 = 767.86 : x
  2. Step 2: Convert to fraction form
    2,001.49/3,000.80 = 767.86/x
  3. Step 3: Cross multiply
    2,001.49x = 3,000.80 × 767.86
  4. Step 4: Simplify right side
    2,001.49x = 2,304,188.71
  5. Step 5: Solve for x
    x = 2,304,188.71/2,001.49
  6. Step 6: Final answer
    x = 1,151.24

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Double scale
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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.