Home / 6,120.78-8,444.64-4,231.70

Finding the Fourth Proportional to 6,120.78, 8,444.64 and 4,231.70

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Solution

The fourth proportional to 6,120.78, 8,444.64 and 4,231.70 is: 5,838.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,120.78 : 8,444.64 = 4,231.70 : x
  2. Step 2: Convert to fraction form
    6,120.78/8,444.64 = 4,231.70/x
  3. Step 3: Cross multiply
    6,120.78x = 8,444.64 × 4,231.70
  4. Step 4: Simplify right side
    6,120.78x = 35,735,183.09
  5. Step 5: Solve for x
    x = 35,735,183.09/6,120.78
  6. Step 6: Final answer
    x = 5,838.34

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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.