Home / 5,240.14-7,231.91-3,911.54

Finding the Fourth Proportional to 5,240.14, 7,231.91 and 3,911.54

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Solution

The fourth proportional to 5,240.14, 7,231.91 and 3,911.54 is: 5,398.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,240.14 : 7,231.91 = 3,911.54 : x
  2. Step 2: Convert to fraction form
    5,240.14/7,231.91 = 3,911.54/x
  3. Step 3: Cross multiply
    5,240.14x = 7,231.91 × 3,911.54
  4. Step 4: Simplify right side
    5,240.14x = 28,287,901.20
  5. Step 5: Solve for x
    x = 28,287,901.20/5,240.14
  6. Step 6: Final answer
    x = 5,398.31

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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.