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Finding the Fourth Proportional to 1,939.06, 2,906.77 and 964.09

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Solution

The fourth proportional to 1,939.06, 2,906.77 and 964.09 is: 1,445.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,939.06 : 2,906.77 = 964.09 : x
  2. Step 2: Convert to fraction form
    1,939.06/2,906.77 = 964.09/x
  3. Step 3: Cross multiply
    1,939.06x = 2,906.77 × 964.09
  4. Step 4: Simplify right side
    1,939.06x = 2,802,387.89
  5. Step 5: Solve for x
    x = 2,802,387.89/1,939.06
  6. Step 6: Final answer
    x = 1,445.23

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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.