Home / 5,110.80-7,052.97-3,121.08

Finding the Fourth Proportional to 5,110.80, 7,052.97 and 3,121.08

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Solution

The fourth proportional to 5,110.80, 7,052.97 and 3,121.08 is: 4,307.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,110.80 : 7,052.97 = 3,121.08 : x
  2. Step 2: Convert to fraction form
    5,110.80/7,052.97 = 3,121.08/x
  3. Step 3: Cross multiply
    5,110.80x = 7,052.97 × 3,121.08
  4. Step 4: Simplify right side
    5,110.80x = 22,012,883.61
  5. Step 5: Solve for x
    x = 22,012,883.61/5,110.80
  6. Step 6: Final answer
    x = 4,307.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.