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Finding the Fourth Proportional to 8,205.48, 12,305.48 and 2,657.32

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Solution

The fourth proportional to 8,205.48, 12,305.48 and 2,657.32 is: 3,985.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,205.48 : 12,305.48 = 2,657.32 : x
  2. Step 2: Convert to fraction form
    8,205.48/12,305.48 = 2,657.32/x
  3. Step 3: Cross multiply
    8,205.48x = 12,305.48 × 2,657.32
  4. Step 4: Simplify right side
    8,205.48x = 32,699,598.11
  5. Step 5: Solve for x
    x = 32,699,598.11/8,205.48
  6. Step 6: Final answer
    x = 3,985.09

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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.