Home / 3,798.64-5,238.96-2,912.80

Finding the Fourth Proportional to 3,798.64, 5,238.96 and 2,912.80

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Solution

The fourth proportional to 3,798.64, 5,238.96 and 2,912.80 is: 4,017.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,798.64 : 5,238.96 = 2,912.80 : x
  2. Step 2: Convert to fraction form
    3,798.64/5,238.96 = 2,912.80/x
  3. Step 3: Cross multiply
    3,798.64x = 5,238.96 × 2,912.80
  4. Step 4: Simplify right side
    3,798.64x = 15,260,042.69
  5. Step 5: Solve for x
    x = 15,260,042.69/3,798.64
  6. Step 6: Final answer
    x = 4,017.24

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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.