Home / 3,865.42-5,334.96-2,186.90

Finding the Fourth Proportional to 3,865.42, 5,334.96 and 2,186.90

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Solution

The fourth proportional to 3,865.42, 5,334.96 and 2,186.90 is: 3,018.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,865.42 : 5,334.96 = 2,186.90 : x
  2. Step 2: Convert to fraction form
    3,865.42/5,334.96 = 2,186.90/x
  3. Step 3: Cross multiply
    3,865.42x = 5,334.96 × 2,186.90
  4. Step 4: Simplify right side
    3,865.42x = 11,667,024.02
  5. Step 5: Solve for x
    x = 11,667,024.02/3,865.42
  6. Step 6: Final answer
    x = 3,018.31

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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.