Home / 4,989.61-6,879.97-3,728.54

Finding the Fourth Proportional to 4,989.61, 6,879.97 and 3,728.54

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Solution

The fourth proportional to 4,989.61, 6,879.97 and 3,728.54 is: 5,141.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,989.61 : 6,879.97 = 3,728.54 : x
  2. Step 2: Convert to fraction form
    4,989.61/6,879.97 = 3,728.54/x
  3. Step 3: Cross multiply
    4,989.61x = 6,879.97 × 3,728.54
  4. Step 4: Simplify right side
    4,989.61x = 25,652,265.20
  5. Step 5: Solve for x
    x = 25,652,265.20/4,989.61
  6. Step 6: Final answer
    x = 5,141.14

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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.