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Finding the Fourth Proportional to 8,649.27, 12,969.63 and 2,805.12

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Solution

The fourth proportional to 8,649.27, 12,969.63 and 2,805.12 is: 4,206.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,649.27 : 12,969.63 = 2,805.12 : x
  2. Step 2: Convert to fraction form
    8,649.27/12,969.63 = 2,805.12/x
  3. Step 3: Cross multiply
    8,649.27x = 12,969.63 × 2,805.12
  4. Step 4: Simplify right side
    8,649.27x = 36,381,368.51
  5. Step 5: Solve for x
    x = 36,381,368.51/8,649.27
  6. Step 6: Final answer
    x = 4,206.29

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.