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Finding the Fourth Proportional to 8,699.69, 13,051.56 and 2,855.95

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Solution

The fourth proportional to 8,699.69, 13,051.56 and 2,855.95 is: 4,284.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,699.69 : 13,051.56 = 2,855.95 : x
  2. Step 2: Convert to fraction form
    8,699.69/13,051.56 = 2,855.95/x
  3. Step 3: Cross multiply
    8,699.69x = 13,051.56 × 2,855.95
  4. Step 4: Simplify right side
    8,699.69x = 37,274,602.78
  5. Step 5: Solve for x
    x = 37,274,602.78/8,699.69
  6. Step 6: Final answer
    x = 4,284.59

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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.