Home / 1,108.03-1,520.18-1,079.29

Finding the Fourth Proportional to 1,108.03, 1,520.18 and 1,079.29

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Solution

The fourth proportional to 1,108.03, 1,520.18 and 1,079.29 is: 1,480.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,108.03 : 1,520.18 = 1,079.29 : x
  2. Step 2: Convert to fraction form
    1,108.03/1,520.18 = 1,079.29/x
  3. Step 3: Cross multiply
    1,108.03x = 1,520.18 × 1,079.29
  4. Step 4: Simplify right side
    1,108.03x = 1,640,715.07
  5. Step 5: Solve for x
    x = 1,640,715.07/1,108.03
  6. Step 6: Final answer
    x = 1,480.75

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.