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Finding the Fourth Proportional to 3,583.60, 5,362.80 and 3,126.40

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Solution

The fourth proportional to 3,583.60, 5,362.80 and 3,126.40 is: 4,678.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,583.60 : 5,362.80 = 3,126.40 : x
  2. Step 2: Convert to fraction form
    3,583.60/5,362.80 = 3,126.40/x
  3. Step 3: Cross multiply
    3,583.60x = 5,362.80 × 3,126.40
  4. Step 4: Simplify right side
    3,583.60x = 16,766,257.92
  5. Step 5: Solve for x
    x = 16,766,257.92/3,583.60
  6. Step 6: Final answer
    x = 4,678.61

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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.