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Finding the Fourth Proportional to 2,662.07, 3,992.67 and 907.02

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Solution

The fourth proportional to 2,662.07, 3,992.67 and 907.02 is: 1,360.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,662.07 : 3,992.67 = 907.02 : x
  2. Step 2: Convert to fraction form
    2,662.07/3,992.67 = 907.02/x
  3. Step 3: Cross multiply
    2,662.07x = 3,992.67 × 907.02
  4. Step 4: Simplify right side
    2,662.07x = 3,621,431.54
  5. Step 5: Solve for x
    x = 3,621,431.54/2,662.07
  6. Step 6: Final answer
    x = 1,360.38

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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.