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Finding the Fourth Proportional to 8,699.30, 11,997.11 and 7,357.74

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Solution

The fourth proportional to 8,699.30, 11,997.11 and 7,357.74 is: 10,146.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,699.30 : 11,997.11 = 7,357.74 : x
  2. Step 2: Convert to fraction form
    8,699.30/11,997.11 = 7,357.74/x
  3. Step 3: Cross multiply
    8,699.30x = 11,997.11 × 7,357.74
  4. Step 4: Simplify right side
    8,699.30x = 88,271,589.54
  5. Step 5: Solve for x
    x = 88,271,589.54/8,699.30
  6. Step 6: Final answer
    x = 10,146.98

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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.