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Finding the Fourth Proportional to 6,991, 10,488.12 and 2,374

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Solution

The fourth proportional to 6,991, 10,488.12 and 2,374 is: 3,561.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,991 : 10,488.12 = 2,374 : x
  2. Step 2: Convert to fraction form
    6,991/10,488.12 = 2,374/x
  3. Step 3: Cross multiply
    6,991x = 10,488.12 × 2,374
  4. Step 4: Simplify right side
    6,991x = 24,898,796.88
  5. Step 5: Solve for x
    x = 24,898,796.88/6,991
  6. Step 6: Final answer
    x = 3,561.55

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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.