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Finding the Fourth Proportional to 8,465.30, 12,697.91 and 2,621.89

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Solution

The fourth proportional to 8,465.30, 12,697.91 and 2,621.89 is: 3,932.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,465.30 : 12,697.91 = 2,621.89 : x
  2. Step 2: Convert to fraction form
    8,465.30/12,697.91 = 2,621.89/x
  3. Step 3: Cross multiply
    8,465.30x = 12,697.91 × 2,621.89
  4. Step 4: Simplify right side
    8,465.30x = 33,292,523.25
  5. Step 5: Solve for x
    x = 33,292,523.25/8,465.30
  6. Step 6: Final answer
    x = 3,932.82

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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.