Home / 3,812.72-5,261.40-2,134.16

Finding the Fourth Proportional to 3,812.72, 5,261.40 and 2,134.16

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Solution

The fourth proportional to 3,812.72, 5,261.40 and 2,134.16 is: 2,945.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,812.72 : 5,261.40 = 2,134.16 : x
  2. Step 2: Convert to fraction form
    3,812.72/5,261.40 = 2,134.16/x
  3. Step 3: Cross multiply
    3,812.72x = 5,261.40 × 2,134.16
  4. Step 4: Simplify right side
    3,812.72x = 11,228,669.42
  5. Step 5: Solve for x
    x = 11,228,669.42/3,812.72
  6. Step 6: Final answer
    x = 2,945.05

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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.