Home / 5,718.42-7,889.67-3,728.25

Finding the Fourth Proportional to 5,718.42, 7,889.67 and 3,728.25

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Solution

The fourth proportional to 5,718.42, 7,889.67 and 3,728.25 is: 5,143.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,718.42 : 7,889.67 = 3,728.25 : x
  2. Step 2: Convert to fraction form
    5,718.42/7,889.67 = 3,728.25/x
  3. Step 3: Cross multiply
    5,718.42x = 7,889.67 × 3,728.25
  4. Step 4: Simplify right side
    5,718.42x = 29,414,662.18
  5. Step 5: Solve for x
    x = 29,414,662.18/5,718.42
  6. Step 6: Final answer
    x = 5,143.84

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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.