Home / 3,865.66-5,334.56-2,187.16

Finding the Fourth Proportional to 3,865.66, 5,334.56 and 2,187.16

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Solution

The fourth proportional to 3,865.66, 5,334.56 and 2,187.16 is: 3,018.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,865.66 : 5,334.56 = 2,187.16 : x
  2. Step 2: Convert to fraction form
    3,865.66/5,334.56 = 2,187.16/x
  3. Step 3: Cross multiply
    3,865.66x = 5,334.56 × 2,187.16
  4. Step 4: Simplify right side
    3,865.66x = 11,667,536.25
  5. Step 5: Solve for x
    x = 11,667,536.25/3,865.66
  6. Step 6: Final answer
    x = 3,018.25

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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.