Home / 3,728.15-5,142.92-2,235.05

Finding the Fourth Proportional to 3,728.15, 5,142.92 and 2,235.05

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Solution

The fourth proportional to 3,728.15, 5,142.92 and 2,235.05 is: 3,083.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,728.15 : 5,142.92 = 2,235.05 : x
  2. Step 2: Convert to fraction form
    3,728.15/5,142.92 = 2,235.05/x
  3. Step 3: Cross multiply
    3,728.15x = 5,142.92 × 2,235.05
  4. Step 4: Simplify right side
    3,728.15x = 11,494,683.35
  5. Step 5: Solve for x
    x = 11,494,683.35/3,728.15
  6. Step 6: Final answer
    x = 3,083.21

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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.