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Finding the Fourth Proportional to 8,797, 12,139.86 and 5,071

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Solution

The fourth proportional to 8,797, 12,139.86 and 5,071 is: 6,997.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,797 : 12,139.86 = 5,071 : x
  2. Step 2: Convert to fraction form
    8,797/12,139.86 = 5,071/x
  3. Step 3: Cross multiply
    8,797x = 12,139.86 × 5,071
  4. Step 4: Simplify right side
    8,797x = 61,561,230.06
  5. Step 5: Solve for x
    x = 61,561,230.06/8,797
  6. Step 6: Final answer
    x = 6,997.98

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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.