Home / 3,812.40-5,261.21-2,133.79

Finding the Fourth Proportional to 3,812.40, 5,261.21 and 2,133.79

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Solution

The fourth proportional to 3,812.40, 5,261.21 and 2,133.79 is: 2,944.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,812.40 : 5,261.21 = 2,133.79 : x
  2. Step 2: Convert to fraction form
    3,812.40/5,261.21 = 2,133.79/x
  3. Step 3: Cross multiply
    3,812.40x = 5,261.21 × 2,133.79
  4. Step 4: Simplify right side
    3,812.40x = 11,226,306.62
  5. Step 5: Solve for x
    x = 11,226,306.62/3,812.40
  6. Step 6: Final answer
    x = 2,944.69

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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.