Home / 3,771.31-5,203.83-2,156.20

Finding the Fourth Proportional to 3,771.31, 5,203.83 and 2,156.20

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Solution

The fourth proportional to 3,771.31, 5,203.83 and 2,156.20 is: 2,975.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,771.31 : 5,203.83 = 2,156.20 : x
  2. Step 2: Convert to fraction form
    3,771.31/5,203.83 = 2,156.20/x
  3. Step 3: Cross multiply
    3,771.31x = 5,203.83 × 2,156.20
  4. Step 4: Simplify right side
    3,771.31x = 11,220,498.25
  5. Step 5: Solve for x
    x = 11,220,498.25/3,771.31
  6. Step 6: Final answer
    x = 2,975.23

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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.