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Finding the Fourth Proportional to 8,965.99, 13,448.99 and 3,118.50

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Solution

The fourth proportional to 8,965.99, 13,448.99 and 3,118.50 is: 4,677.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,965.99 : 13,448.99 = 3,118.50 : x
  2. Step 2: Convert to fraction form
    8,965.99/13,448.99 = 3,118.50/x
  3. Step 3: Cross multiply
    8,965.99x = 13,448.99 × 3,118.50
  4. Step 4: Simplify right side
    8,965.99x = 41,940,665.57
  5. Step 5: Solve for x
    x = 41,940,665.57/8,965.99
  6. Step 6: Final answer
    x = 4,677.75

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1.5x scale

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.