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Finding the Fourth Proportional to 6,342.78, 8,748.99 and 5,086.85

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Solution

The fourth proportional to 6,342.78, 8,748.99 and 5,086.85 is: 7,016.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,342.78 : 8,748.99 = 5,086.85 : x
  2. Step 2: Convert to fraction form
    6,342.78/8,748.99 = 5,086.85/x
  3. Step 3: Cross multiply
    6,342.78x = 8,748.99 × 5,086.85
  4. Step 4: Simplify right side
    6,342.78x = 44,504,756.04
  5. Step 5: Solve for x
    x = 44,504,756.04/6,342.78
  6. Step 6: Final answer
    x = 7,016.60

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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.