Home / 3,821.90-5,725.65-1,966.70

Finding the Fourth Proportional to 3,821.90, 5,725.65 and 1,966.70

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Solution

The fourth proportional to 3,821.90, 5,725.65 and 1,966.70 is: 2,946.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,821.90 : 5,725.65 = 1,966.70 : x
  2. Step 2: Convert to fraction form
    3,821.90/5,725.65 = 1,966.70/x
  3. Step 3: Cross multiply
    3,821.90x = 5,725.65 × 1,966.70
  4. Step 4: Simplify right side
    3,821.90x = 11,260,635.86
  5. Step 5: Solve for x
    x = 11,260,635.86/3,821.90
  6. Step 6: Final answer
    x = 2,946.34

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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.