Home / 1,959.44-2,939.57-660.88

Finding the Fourth Proportional to 1,959.44, 2,939.57 and 660.88

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Solution

The fourth proportional to 1,959.44, 2,939.57 and 660.88 is: 991.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,959.44 : 2,939.57 = 660.88 : x
  2. Step 2: Convert to fraction form
    1,959.44/2,939.57 = 660.88/x
  3. Step 3: Cross multiply
    1,959.44x = 2,939.57 × 660.88
  4. Step 4: Simplify right side
    1,959.44x = 1,942,685.02
  5. Step 5: Solve for x
    x = 1,942,685.02/1,959.44
  6. Step 6: Final answer
    x = 991.45

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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.