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Finding the Fourth Proportional to 3,322.80, 4,984.20 and 2,545.20

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Solution

The fourth proportional to 3,322.80, 4,984.20 and 2,545.20 is: 3,817.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,322.80 : 4,984.20 = 2,545.20 : x
  2. Step 2: Convert to fraction form
    3,322.80/4,984.20 = 2,545.20/x
  3. Step 3: Cross multiply
    3,322.80x = 4,984.20 × 2,545.20
  4. Step 4: Simplify right side
    3,322.80x = 12,685,785.84
  5. Step 5: Solve for x
    x = 12,685,785.84/3,322.80
  6. Step 6: Final answer
    x = 3,817.80

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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.