Home / 2,939.28-4,406.28-1,089.24

Finding the Fourth Proportional to 2,939.28, 4,406.28 and 1,089.24

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Solution

The fourth proportional to 2,939.28, 4,406.28 and 1,089.24 is: 1,632.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,939.28 : 4,406.28 = 1,089.24 : x
  2. Step 2: Convert to fraction form
    2,939.28/4,406.28 = 1,089.24/x
  3. Step 3: Cross multiply
    2,939.28x = 4,406.28 × 1,089.24
  4. Step 4: Simplify right side
    2,939.28x = 4,799,496.43
  5. Step 5: Solve for x
    x = 4,799,496.43/2,939.28
  6. Step 6: Final answer
    x = 1,632.88

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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.