Home / 2,079.09-3,119.56-909.97

Finding the Fourth Proportional to 2,079.09, 3,119.56 and 909.97

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Solution

The fourth proportional to 2,079.09, 3,119.56 and 909.97 is: 1,365.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,079.09 : 3,119.56 = 909.97 : x
  2. Step 2: Convert to fraction form
    2,079.09/3,119.56 = 909.97/x
  3. Step 3: Cross multiply
    2,079.09x = 3,119.56 × 909.97
  4. Step 4: Simplify right side
    2,079.09x = 2,838,695.94
  5. Step 5: Solve for x
    x = 2,838,695.94/2,079.09
  6. Step 6: Final answer
    x = 1,365.36

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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.