Home / 3,489.62-4,815.61-1,917.74

Finding the Fourth Proportional to 3,489.62, 4,815.61 and 1,917.74

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Solution

The fourth proportional to 3,489.62, 4,815.61 and 1,917.74 is: 2,646.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,489.62 : 4,815.61 = 1,917.74 : x
  2. Step 2: Convert to fraction form
    3,489.62/4,815.61 = 1,917.74/x
  3. Step 3: Cross multiply
    3,489.62x = 4,815.61 × 1,917.74
  4. Step 4: Simplify right side
    3,489.62x = 9,235,087.92
  5. Step 5: Solve for x
    x = 9,235,087.92/3,489.62
  6. Step 6: Final answer
    x = 2,646.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.