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Finding the Fourth Proportional to 8,913.85, 13,371.08 and 2,340.09

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Solution

The fourth proportional to 8,913.85, 13,371.08 and 2,340.09 is: 3,510.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,913.85 : 13,371.08 = 2,340.09 : x
  2. Step 2: Convert to fraction form
    8,913.85/13,371.08 = 2,340.09/x
  3. Step 3: Cross multiply
    8,913.85x = 13,371.08 × 2,340.09
  4. Step 4: Simplify right side
    8,913.85x = 31,289,518.90
  5. Step 5: Solve for x
    x = 31,289,518.90/8,913.85
  6. Step 6: Final answer
    x = 3,510.21

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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.