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Finding the Fourth Proportional to 6,610.87, 9,916.31 and 3,856.77

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Solution

The fourth proportional to 6,610.87, 9,916.31 and 3,856.77 is: 5,785.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,610.87 : 9,916.31 = 3,856.77 : x
  2. Step 2: Convert to fraction form
    6,610.87/9,916.31 = 3,856.77/x
  3. Step 3: Cross multiply
    6,610.87x = 9,916.31 × 3,856.77
  4. Step 4: Simplify right side
    6,610.87x = 38,244,907.63
  5. Step 5: Solve for x
    x = 38,244,907.63/6,610.87
  6. Step 6: Final answer
    x = 5,785.16

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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.