Home / 3,217.72-4,821.52-1,918.48

Finding the Fourth Proportional to 3,217.72, 4,821.52 and 1,918.48

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Solution

The fourth proportional to 3,217.72, 4,821.52 and 1,918.48 is: 2,874.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,217.72 : 4,821.52 = 1,918.48 : x
  2. Step 2: Convert to fraction form
    3,217.72/4,821.52 = 1,918.48/x
  3. Step 3: Cross multiply
    3,217.72x = 4,821.52 × 1,918.48
  4. Step 4: Simplify right side
    3,217.72x = 9,249,989.69
  5. Step 5: Solve for x
    x = 9,249,989.69/3,217.72
  6. Step 6: Final answer
    x = 2,874.70

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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.