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Finding the Fourth Proportional to 7,881.76, 11,824.26 and 3,264.76

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Solution

The fourth proportional to 7,881.76, 11,824.26 and 3,264.76 is: 4,897.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,881.76 : 11,824.26 = 3,264.76 : x
  2. Step 2: Convert to fraction form
    7,881.76/11,824.26 = 3,264.76/x
  3. Step 3: Cross multiply
    7,881.76x = 11,824.26 × 3,264.76
  4. Step 4: Simplify right side
    7,881.76x = 38,603,371.08
  5. Step 5: Solve for x
    x = 38,603,371.08/7,881.76
  6. Step 6: Final answer
    x = 4,897.81

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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.