Home / 6,638.85-9,160.55-3,805.68

Finding the Fourth Proportional to 6,638.85, 9,160.55 and 3,805.68

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Solution

The fourth proportional to 6,638.85, 9,160.55 and 3,805.68 is: 5,251.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,638.85 : 9,160.55 = 3,805.68 : x
  2. Step 2: Convert to fraction form
    6,638.85/9,160.55 = 3,805.68/x
  3. Step 3: Cross multiply
    6,638.85x = 9,160.55 × 3,805.68
  4. Step 4: Simplify right side
    6,638.85x = 34,862,131.44
  5. Step 5: Solve for x
    x = 34,862,131.44/6,638.85
  6. Step 6: Final answer
    x = 5,251.23

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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.