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Finding the Fourth Proportional to 6,371.72, 8,792.81 and 3,539.02

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Solution

The fourth proportional to 6,371.72, 8,792.81 and 3,539.02 is: 4,883.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,371.72 : 8,792.81 = 3,539.02 : x
  2. Step 2: Convert to fraction form
    6,371.72/8,792.81 = 3,539.02/x
  3. Step 3: Cross multiply
    6,371.72x = 8,792.81 × 3,539.02
  4. Step 4: Simplify right side
    6,371.72x = 31,117,930.45
  5. Step 5: Solve for x
    x = 31,117,930.45/6,371.72
  6. Step 6: Final answer
    x = 4,883.76

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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.