Home / 5,105.96-7,661.37-2,331.20

Finding the Fourth Proportional to 5,105.96, 7,661.37 and 2,331.20

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Solution

The fourth proportional to 5,105.96, 7,661.37 and 2,331.20 is: 3,497.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,105.96 : 7,661.37 = 2,331.20 : x
  2. Step 2: Convert to fraction form
    5,105.96/7,661.37 = 2,331.20/x
  3. Step 3: Cross multiply
    5,105.96x = 7,661.37 × 2,331.20
  4. Step 4: Simplify right side
    5,105.96x = 17,860,185.74
  5. Step 5: Solve for x
    x = 17,860,185.74/5,105.96
  6. Step 6: Final answer
    x = 3,497.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.