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Finding the Fourth Proportional to 8,921.57, 13,382.57 and 2,998.54

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Solution

The fourth proportional to 8,921.57, 13,382.57 and 2,998.54 is: 4,497.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,921.57 : 13,382.57 = 2,998.54 : x
  2. Step 2: Convert to fraction form
    8,921.57/13,382.57 = 2,998.54/x
  3. Step 3: Cross multiply
    8,921.57x = 13,382.57 × 2,998.54
  4. Step 4: Simplify right side
    8,921.57x = 40,128,184.43
  5. Step 5: Solve for x
    x = 40,128,184.43/8,921.57
  6. Step 6: Final answer
    x = 4,497.89

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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.