Home / 5,243.40-7,231.68-3,145.50

Finding the Fourth Proportional to 5,243.40, 7,231.68 and 3,145.50

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Solution

The fourth proportional to 5,243.40, 7,231.68 and 3,145.50 is: 4,338.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,243.40 : 7,231.68 = 3,145.50 : x
  2. Step 2: Convert to fraction form
    5,243.40/7,231.68 = 3,145.50/x
  3. Step 3: Cross multiply
    5,243.40x = 7,231.68 × 3,145.50
  4. Step 4: Simplify right side
    5,243.40x = 22,747,249.44
  5. Step 5: Solve for x
    x = 22,747,249.44/5,243.40
  6. Step 6: Final answer
    x = 4,338.26

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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.