Home / 5,229.87-7,217.20-2,991.51

Finding the Fourth Proportional to 5,229.87, 7,217.20 and 2,991.51

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Solution

The fourth proportional to 5,229.87, 7,217.20 and 2,991.51 is: 4,128.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,229.87 : 7,217.20 = 2,991.51 : x
  2. Step 2: Convert to fraction form
    5,229.87/7,217.20 = 2,991.51/x
  3. Step 3: Cross multiply
    5,229.87x = 7,217.20 × 2,991.51
  4. Step 4: Simplify right side
    5,229.87x = 21,590,309.41
  5. Step 5: Solve for x
    x = 21,590,309.41/5,229.87
  6. Step 6: Final answer
    x = 4,128.27

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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.