Home / 5,231.70-7,218.72-3,107.88

Finding the Fourth Proportional to 5,231.70, 7,218.72 and 3,107.88

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Solution

The fourth proportional to 5,231.70, 7,218.72 and 3,107.88 is: 4,288.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,231.70 : 7,218.72 = 3,107.88 : x
  2. Step 2: Convert to fraction form
    5,231.70/7,218.72 = 3,107.88/x
  3. Step 3: Cross multiply
    5,231.70x = 7,218.72 × 3,107.88
  4. Step 4: Simplify right side
    5,231.70x = 22,434,915.51
  5. Step 5: Solve for x
    x = 22,434,915.51/5,231.70
  6. Step 6: Final answer
    x = 4,288.26

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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.