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Finding the Fourth Proportional to 8,168.67, 11,256.95 and 5,511.47

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Solution

The fourth proportional to 8,168.67, 11,256.95 and 5,511.47 is: 7,595.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,168.67 : 11,256.95 = 5,511.47 : x
  2. Step 2: Convert to fraction form
    8,168.67/11,256.95 = 5,511.47/x
  3. Step 3: Cross multiply
    8,168.67x = 11,256.95 × 5,511.47
  4. Step 4: Simplify right side
    8,168.67x = 62,042,299.71
  5. Step 5: Solve for x
    x = 62,042,299.71/8,168.67
  6. Step 6: Final answer
    x = 7,595.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.