Home / 4,993.12-6,889.60-3,105.20

Finding the Fourth Proportional to 4,993.12, 6,889.60 and 3,105.20

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Solution

The fourth proportional to 4,993.12, 6,889.60 and 3,105.20 is: 4,284.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,993.12 : 6,889.60 = 3,105.20 : x
  2. Step 2: Convert to fraction form
    4,993.12/6,889.60 = 3,105.20/x
  3. Step 3: Cross multiply
    4,993.12x = 6,889.60 × 3,105.20
  4. Step 4: Simplify right side
    4,993.12x = 21,393,585.92
  5. Step 5: Solve for x
    x = 21,393,585.92/4,993.12
  6. Step 6: Final answer
    x = 4,284.61

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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.