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Finding the Fourth Proportional to 2,987.01, 4,481.01 and 906.71

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Solution

The fourth proportional to 2,987.01, 4,481.01 and 906.71 is: 1,360.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.01 : 4,481.01 = 906.71 : x
  2. Step 2: Convert to fraction form
    2,987.01/4,481.01 = 906.71/x
  3. Step 3: Cross multiply
    2,987.01x = 4,481.01 × 906.71
  4. Step 4: Simplify right side
    2,987.01x = 4,062,954.17
  5. Step 5: Solve for x
    x = 4,062,954.17/2,987.01
  6. Step 6: Final answer
    x = 1,360.21

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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.