Home / 5,629.36-7,768.31-3,111.42

Finding the Fourth Proportional to 5,629.36, 7,768.31 and 3,111.42

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Solution

The fourth proportional to 5,629.36, 7,768.31 and 3,111.42 is: 4,293.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,629.36 : 7,768.31 = 3,111.42 : x
  2. Step 2: Convert to fraction form
    5,629.36/7,768.31 = 3,111.42/x
  3. Step 3: Cross multiply
    5,629.36x = 7,768.31 × 3,111.42
  4. Step 4: Simplify right side
    5,629.36x = 24,170,493.08
  5. Step 5: Solve for x
    x = 24,170,493.08/5,629.36
  6. Step 6: Final answer
    x = 4,293.65

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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.