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Finding the Fourth Proportional to 8,484.92, 12,725.42 and 3,220.53

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Solution

The fourth proportional to 8,484.92, 12,725.42 and 3,220.53 is: 4,830.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,484.92 : 12,725.42 = 3,220.53 : x
  2. Step 2: Convert to fraction form
    8,484.92/12,725.42 = 3,220.53/x
  3. Step 3: Cross multiply
    8,484.92x = 12,725.42 × 3,220.53
  4. Step 4: Simplify right side
    8,484.92x = 40,982,580.77
  5. Step 5: Solve for x
    x = 40,982,580.77/8,484.92
  6. Step 6: Final answer
    x = 4,830.05

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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.