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Finding the Fourth Proportional to 8,063.71, 11,139.13 and 7,669.60

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Solution

The fourth proportional to 8,063.71, 11,139.13 and 7,669.60 is: 10,594.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,063.71 : 11,139.13 = 7,669.60 : x
  2. Step 2: Convert to fraction form
    8,063.71/11,139.13 = 7,669.60/x
  3. Step 3: Cross multiply
    8,063.71x = 11,139.13 × 7,669.60
  4. Step 4: Simplify right side
    8,063.71x = 85,432,671.45
  5. Step 5: Solve for x
    x = 85,432,671.45/8,063.71
  6. Step 6: Final answer
    x = 10,594.71

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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.