Home / 2,315.72-3,469.55-1,928.22

Finding the Fourth Proportional to 2,315.72, 3,469.55 and 1,928.22

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Solution

The fourth proportional to 2,315.72, 3,469.55 and 1,928.22 is: 2,888.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,315.72 : 3,469.55 = 1,928.22 : x
  2. Step 2: Convert to fraction form
    2,315.72/3,469.55 = 1,928.22/x
  3. Step 3: Cross multiply
    2,315.72x = 3,469.55 × 1,928.22
  4. Step 4: Simplify right side
    2,315.72x = 6,690,046.06
  5. Step 5: Solve for x
    x = 6,690,046.06/2,315.72
  6. Step 6: Final answer
    x = 2,888.97

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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.