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Finding the Fourth Proportional to 6,886.22, 9,503.12 and 3,901.87

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Solution

The fourth proportional to 6,886.22, 9,503.12 and 3,901.87 is: 5,384.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,886.22 : 9,503.12 = 3,901.87 : x
  2. Step 2: Convert to fraction form
    6,886.22/9,503.12 = 3,901.87/x
  3. Step 3: Cross multiply
    6,886.22x = 9,503.12 × 3,901.87
  4. Step 4: Simplify right side
    6,886.22x = 37,079,960.47
  5. Step 5: Solve for x
    x = 37,079,960.47/6,886.22
  6. Step 6: Final answer
    x = 5,384.66

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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.