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Finding the Fourth Proportional to 8,998.40, 13,497.74 and 2,758.49

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Solution

The fourth proportional to 8,998.40, 13,497.74 and 2,758.49 is: 4,137.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,998.40 : 13,497.74 = 2,758.49 : x
  2. Step 2: Convert to fraction form
    8,998.40/13,497.74 = 2,758.49/x
  3. Step 3: Cross multiply
    8,998.40x = 13,497.74 × 2,758.49
  4. Step 4: Simplify right side
    8,998.40x = 37,233,380.81
  5. Step 5: Solve for x
    x = 37,233,380.81/8,998.40
  6. Step 6: Final answer
    x = 4,137.78

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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.