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Finding the Fourth Proportional to 8,655.77, 12,983.63 and 2,081.94

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Solution

The fourth proportional to 8,655.77, 12,983.63 and 2,081.94 is: 3,122.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,655.77 : 12,983.63 = 2,081.94 : x
  2. Step 2: Convert to fraction form
    8,655.77/12,983.63 = 2,081.94/x
  3. Step 3: Cross multiply
    8,655.77x = 12,983.63 × 2,081.94
  4. Step 4: Simplify right side
    8,655.77x = 27,031,128.23
  5. Step 5: Solve for x
    x = 27,031,128.23/8,655.77
  6. Step 6: Final answer
    x = 3,122.90

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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.