Home / 8,145.42-11,240.70-4,959.78

Finding the Fourth Proportional to 8,145.42, 11,240.70 and 4,959.78

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Solution

The fourth proportional to 8,145.42, 11,240.70 and 4,959.78 is: 6,844.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,145.42 : 11,240.70 = 4,959.78 : x
  2. Step 2: Convert to fraction form
    8,145.42/11,240.70 = 4,959.78/x
  3. Step 3: Cross multiply
    8,145.42x = 11,240.70 × 4,959.78
  4. Step 4: Simplify right side
    8,145.42x = 55,751,399.05
  5. Step 5: Solve for x
    x = 55,751,399.05/8,145.42
  6. Step 6: Final answer
    x = 6,844.51

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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.