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Finding the Fourth Proportional to 1,978.43, 2,967.30 and 745.85

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Solution

The fourth proportional to 1,978.43, 2,967.30 and 745.85 is: 1,118.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,978.43 : 2,967.30 = 745.85 : x
  2. Step 2: Convert to fraction form
    1,978.43/2,967.30 = 745.85/x
  3. Step 3: Cross multiply
    1,978.43x = 2,967.30 × 745.85
  4. Step 4: Simplify right side
    1,978.43x = 2,213,145.87
  5. Step 5: Solve for x
    x = 2,213,145.87/1,978.43
  6. Step 6: Final answer
    x = 1,118.64

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Why These Related Problems?

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