Home / 2,079.47-3,119.70-1,105.36

Finding the Fourth Proportional to 2,079.47, 3,119.70 and 1,105.36

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Solution

The fourth proportional to 2,079.47, 3,119.70 and 1,105.36 is: 1,658.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,079.47 : 3,119.70 = 1,105.36 : x
  2. Step 2: Convert to fraction form
    2,079.47/3,119.70 = 1,105.36/x
  3. Step 3: Cross multiply
    2,079.47x = 3,119.70 × 1,105.36
  4. Step 4: Simplify right side
    2,079.47x = 3,448,391.59
  5. Step 5: Solve for x
    x = 3,448,391.59/2,079.47
  6. Step 6: Final answer
    x = 1,658.30

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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.