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Finding the Fourth Proportional to 6,170.79, 8,515.89 and 3,518.31

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Solution

The fourth proportional to 6,170.79, 8,515.89 and 3,518.31 is: 4,855.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,170.79 : 8,515.89 = 3,518.31 : x
  2. Step 2: Convert to fraction form
    6,170.79/8,515.89 = 3,518.31/x
  3. Step 3: Cross multiply
    6,170.79x = 8,515.89 × 3,518.31
  4. Step 4: Simplify right side
    6,170.79x = 29,961,540.95
  5. Step 5: Solve for x
    x = 29,961,540.95/6,170.79
  6. Step 6: Final answer
    x = 4,855.38

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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.