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Finding the Fourth Proportional to 8,916.87, 13,374.77 and 2,760.87

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Solution

The fourth proportional to 8,916.87, 13,374.77 and 2,760.87 is: 4,141.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,916.87 : 13,374.77 = 2,760.87 : x
  2. Step 2: Convert to fraction form
    8,916.87/13,374.77 = 2,760.87/x
  3. Step 3: Cross multiply
    8,916.87x = 13,374.77 × 2,760.87
  4. Step 4: Simplify right side
    8,916.87x = 36,925,987.45
  5. Step 5: Solve for x
    x = 36,925,987.45/8,916.87
  6. Step 6: Final answer
    x = 4,141.14

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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.