Home / 5,129.97-7,079.36-2,772.12

Finding the Fourth Proportional to 5,129.97, 7,079.36 and 2,772.12

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Solution

The fourth proportional to 5,129.97, 7,079.36 and 2,772.12 is: 3,825.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,129.97 : 7,079.36 = 2,772.12 : x
  2. Step 2: Convert to fraction form
    5,129.97/7,079.36 = 2,772.12/x
  3. Step 3: Cross multiply
    5,129.97x = 7,079.36 × 2,772.12
  4. Step 4: Simplify right side
    5,129.97x = 19,624,835.44
  5. Step 5: Solve for x
    x = 19,624,835.44/5,129.97
  6. Step 6: Final answer
    x = 3,825.53

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1.5x scale

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.