Home / 5,118.36-7,066.78-3,864.48

Finding the Fourth Proportional to 5,118.36, 7,066.78 and 3,864.48

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Solution

The fourth proportional to 5,118.36, 7,066.78 and 3,864.48 is: 5,335.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,118.36 : 7,066.78 = 3,864.48 : x
  2. Step 2: Convert to fraction form
    5,118.36/7,066.78 = 3,864.48/x
  3. Step 3: Cross multiply
    5,118.36x = 7,066.78 × 3,864.48
  4. Step 4: Simplify right side
    5,118.36x = 27,309,429.97
  5. Step 5: Solve for x
    x = 27,309,429.97/5,118.36
  6. Step 6: Final answer
    x = 5,335.58

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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.