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Finding the Fourth Proportional to 6,351.55, 8,764.80 and 3,518.84

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Solution

The fourth proportional to 6,351.55, 8,764.80 and 3,518.84 is: 4,855.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,351.55 : 8,764.80 = 3,518.84 : x
  2. Step 2: Convert to fraction form
    6,351.55/8,764.80 = 3,518.84/x
  3. Step 3: Cross multiply
    6,351.55x = 8,764.80 × 3,518.84
  4. Step 4: Simplify right side
    6,351.55x = 30,841,928.83
  5. Step 5: Solve for x
    x = 30,841,928.83/6,351.55
  6. Step 6: Final answer
    x = 4,855.81

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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.