Home / 3,810.74-5,258.03-2,131.88

Finding the Fourth Proportional to 3,810.74, 5,258.03 and 2,131.88

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Solution

The fourth proportional to 3,810.74, 5,258.03 and 2,131.88 is: 2,941.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,810.74 : 5,258.03 = 2,131.88 : x
  2. Step 2: Convert to fraction form
    3,810.74/5,258.03 = 2,131.88/x
  3. Step 3: Cross multiply
    3,810.74x = 5,258.03 × 2,131.88
  4. Step 4: Simplify right side
    3,810.74x = 11,209,452.05
  5. Step 5: Solve for x
    x = 11,209,452.05/3,810.74
  6. Step 6: Final answer
    x = 2,941.55

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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.