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Finding the Fourth Proportional to 6,512.60, 8,986.92 and 3,860.18

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Solution

The fourth proportional to 6,512.60, 8,986.92 and 3,860.18 is: 5,326.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,512.60 : 8,986.92 = 3,860.18 : x
  2. Step 2: Convert to fraction form
    6,512.60/8,986.92 = 3,860.18/x
  3. Step 3: Cross multiply
    6,512.60x = 8,986.92 × 3,860.18
  4. Step 4: Simplify right side
    6,512.60x = 34,691,128.85
  5. Step 5: Solve for x
    x = 34,691,128.85/6,512.60
  6. Step 6: Final answer
    x = 5,326.77

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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.