Home / 2,991.24-4,129.38-2,295.72

Finding the Fourth Proportional to 2,991.24, 4,129.38 and 2,295.72

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Solution

The fourth proportional to 2,991.24, 4,129.38 and 2,295.72 is: 3,169.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,991.24 : 4,129.38 = 2,295.72 : x
  2. Step 2: Convert to fraction form
    2,991.24/4,129.38 = 2,295.72/x
  3. Step 3: Cross multiply
    2,991.24x = 4,129.38 × 2,295.72
  4. Step 4: Simplify right side
    2,991.24x = 9,479,900.25
  5. Step 5: Solve for x
    x = 9,479,900.25/2,991.24
  6. Step 6: Final answer
    x = 3,169.22

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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.