Home / 5,231.40-7,219.56-2,993.80

Finding the Fourth Proportional to 5,231.40, 7,219.56 and 2,993.80

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Solution

The fourth proportional to 5,231.40, 7,219.56 and 2,993.80 is: 4,131.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,231.40 : 7,219.56 = 2,993.80 : x
  2. Step 2: Convert to fraction form
    5,231.40/7,219.56 = 2,993.80/x
  3. Step 3: Cross multiply
    5,231.40x = 7,219.56 × 2,993.80
  4. Step 4: Simplify right side
    5,231.40x = 21,613,918.73
  5. Step 5: Solve for x
    x = 21,613,918.73/5,231.40
  6. Step 6: Final answer
    x = 4,131.57

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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.