Home / 6,261.75-8,638.83-4,138.29

Finding the Fourth Proportional to 6,261.75, 8,638.83 and 4,138.29

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Solution

The fourth proportional to 6,261.75, 8,638.83 and 4,138.29 is: 5,709.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,261.75 : 8,638.83 = 4,138.29 : x
  2. Step 2: Convert to fraction form
    6,261.75/8,638.83 = 4,138.29/x
  3. Step 3: Cross multiply
    6,261.75x = 8,638.83 × 4,138.29
  4. Step 4: Simplify right side
    6,261.75x = 35,749,983.80
  5. Step 5: Solve for x
    x = 35,749,983.80/6,261.75
  6. Step 6: Final answer
    x = 5,709.26

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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.