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Finding the Fourth Proportional to 2,001.69, 3,000.72 and 905.46

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Solution

The fourth proportional to 2,001.69, 3,000.72 and 905.46 is: 1,357.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,001.69 : 3,000.72 = 905.46 : x
  2. Step 2: Convert to fraction form
    2,001.69/3,000.72 = 905.46/x
  3. Step 3: Cross multiply
    2,001.69x = 3,000.72 × 905.46
  4. Step 4: Simplify right side
    2,001.69x = 2,717,028.54
  5. Step 5: Solve for x
    x = 2,717,028.54/2,001.69
  6. Step 6: Final answer
    x = 1,357.36

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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.