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Finding the Fourth Proportional to 8,699.21, 13,049.84 and 2,774.01

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Solution

The fourth proportional to 8,699.21, 13,049.84 and 2,774.01 is: 4,161.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,699.21 : 13,049.84 = 2,774.01 : x
  2. Step 2: Convert to fraction form
    8,699.21/13,049.84 = 2,774.01/x
  3. Step 3: Cross multiply
    8,699.21x = 13,049.84 × 2,774.01
  4. Step 4: Simplify right side
    8,699.21x = 36,200,386.66
  5. Step 5: Solve for x
    x = 36,200,386.66/8,699.21
  6. Step 6: Final answer
    x = 4,161.34

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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.