Home / 3,812.80-5,261.88-2,134.24

Finding the Fourth Proportional to 3,812.80, 5,261.88 and 2,134.24

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Solution

The fourth proportional to 3,812.80, 5,261.88 and 2,134.24 is: 2,945.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,812.80 : 5,261.88 = 2,134.24 : x
  2. Step 2: Convert to fraction form
    3,812.80/5,261.88 = 2,134.24/x
  3. Step 3: Cross multiply
    3,812.80x = 5,261.88 × 2,134.24
  4. Step 4: Simplify right side
    3,812.80x = 11,230,114.77
  5. Step 5: Solve for x
    x = 11,230,114.77/3,812.80
  6. Step 6: Final answer
    x = 2,945.37

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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.