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Finding the Fourth Proportional to 6,511.80, 9,753.30 and 3,919.80

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Solution

The fourth proportional to 6,511.80, 9,753.30 and 3,919.80 is: 5,871.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,511.80 : 9,753.30 = 3,919.80 : x
  2. Step 2: Convert to fraction form
    6,511.80/9,753.30 = 3,919.80/x
  3. Step 3: Cross multiply
    6,511.80x = 9,753.30 × 3,919.80
  4. Step 4: Simplify right side
    6,511.80x = 38,230,985.34
  5. Step 5: Solve for x
    x = 38,230,985.34/6,511.80
  6. Step 6: Final answer
    x = 5,871.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.