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Finding the Fourth Proportional to 3,700.81, 5,550.08 and 1,620.32

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Solution

The fourth proportional to 3,700.81, 5,550.08 and 1,620.32 is: 2,429.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,700.81 : 5,550.08 = 1,620.32 : x
  2. Step 2: Convert to fraction form
    3,700.81/5,550.08 = 1,620.32/x
  3. Step 3: Cross multiply
    3,700.81x = 5,550.08 × 1,620.32
  4. Step 4: Simplify right side
    3,700.81x = 8,992,888.97
  5. Step 5: Solve for x
    x = 8,992,888.97/3,700.81
  6. Step 6: Final answer
    x = 2,429.98

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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.