Home / 6,638.35-9,157.57-4,121.95

Finding the Fourth Proportional to 6,638.35, 9,157.57 and 4,121.95

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Solution

The fourth proportional to 6,638.35, 9,157.57 and 4,121.95 is: 5,686.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,638.35 : 9,157.57 = 4,121.95 : x
  2. Step 2: Convert to fraction form
    6,638.35/9,157.57 = 4,121.95/x
  3. Step 3: Cross multiply
    6,638.35x = 9,157.57 × 4,121.95
  4. Step 4: Simplify right side
    6,638.35x = 37,747,045.66
  5. Step 5: Solve for x
    x = 37,747,045.66/6,638.35
  6. Step 6: Final answer
    x = 5,686.21

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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.