Home / 5,185.71-7,759.41-3,107.18

Finding the Fourth Proportional to 5,185.71, 7,759.41 and 3,107.18

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Solution

The fourth proportional to 5,185.71, 7,759.41 and 3,107.18 is: 4,649.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,185.71 : 7,759.41 = 3,107.18 : x
  2. Step 2: Convert to fraction form
    5,185.71/7,759.41 = 3,107.18/x
  3. Step 3: Cross multiply
    5,185.71x = 7,759.41 × 3,107.18
  4. Step 4: Simplify right side
    5,185.71x = 24,109,883.56
  5. Step 5: Solve for x
    x = 24,109,883.56/5,185.71
  6. Step 6: Final answer
    x = 4,649.29

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Half scale
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Double scale
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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.