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Finding the Fourth Proportional to 8,672.66, 13,010.64 and 3,478.94

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Solution

The fourth proportional to 8,672.66, 13,010.64 and 3,478.94 is: 5,219.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,672.66 : 13,010.64 = 3,478.94 : x
  2. Step 2: Convert to fraction form
    8,672.66/13,010.64 = 3,478.94/x
  3. Step 3: Cross multiply
    8,672.66x = 13,010.64 × 3,478.94
  4. Step 4: Simplify right side
    8,672.66x = 45,263,235.92
  5. Step 5: Solve for x
    x = 45,263,235.92/8,672.66
  6. Step 6: Final answer
    x = 5,219.07

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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.