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Finding the Fourth Proportional to 8,091.66, 12,135.42 and 2,897.58

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Solution

The fourth proportional to 8,091.66, 12,135.42 and 2,897.58 is: 4,345.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,091.66 : 12,135.42 = 2,897.58 : x
  2. Step 2: Convert to fraction form
    8,091.66/12,135.42 = 2,897.58/x
  3. Step 3: Cross multiply
    8,091.66x = 12,135.42 × 2,897.58
  4. Step 4: Simplify right side
    8,091.66x = 35,163,350.28
  5. Step 5: Solve for x
    x = 35,163,350.28/8,091.66
  6. Step 6: Final answer
    x = 4,345.63

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1.5x scale

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.