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Finding the Fourth Proportional to 6,351.79, 8,765.80 and 3,519.48

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Solution

The fourth proportional to 6,351.79, 8,765.80 and 3,519.48 is: 4,857.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,351.79 : 8,765.80 = 3,519.48 : x
  2. Step 2: Convert to fraction form
    6,351.79/8,765.80 = 3,519.48/x
  3. Step 3: Cross multiply
    6,351.79x = 8,765.80 × 3,519.48
  4. Step 4: Simplify right side
    6,351.79x = 30,851,013.96
  5. Step 5: Solve for x
    x = 30,851,013.96/6,351.79
  6. Step 6: Final answer
    x = 4,857.06

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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.