Home / 5,316.25-7,338.41-3,993.78

Finding the Fourth Proportional to 5,316.25, 7,338.41 and 3,993.78

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Solution

The fourth proportional to 5,316.25, 7,338.41 and 3,993.78 is: 5,512.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,316.25 : 7,338.41 = 3,993.78 : x
  2. Step 2: Convert to fraction form
    5,316.25/7,338.41 = 3,993.78/x
  3. Step 3: Cross multiply
    5,316.25x = 7,338.41 × 3,993.78
  4. Step 4: Simplify right side
    5,316.25x = 29,307,995.09
  5. Step 5: Solve for x
    x = 29,307,995.09/5,316.25
  6. Step 6: Final answer
    x = 5,512.91

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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.