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Finding the Fourth Proportional to 8,602.69, 12,904.05 and 2,759.77

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Solution

The fourth proportional to 8,602.69, 12,904.05 and 2,759.77 is: 4,139.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,602.69 : 12,904.05 = 2,759.77 : x
  2. Step 2: Convert to fraction form
    8,602.69/12,904.05 = 2,759.77/x
  3. Step 3: Cross multiply
    8,602.69x = 12,904.05 × 2,759.77
  4. Step 4: Simplify right side
    8,602.69x = 35,612,210.07
  5. Step 5: Solve for x
    x = 35,612,210.07/8,602.69
  6. Step 6: Final answer
    x = 4,139.66

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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.