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Finding the Fourth Proportional to 3,363.90, 4,640.31 and 1,966.38

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Solution

The fourth proportional to 3,363.90, 4,640.31 and 1,966.38 is: 2,712.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,363.90 : 4,640.31 = 1,966.38 : x
  2. Step 2: Convert to fraction form
    3,363.90/4,640.31 = 1,966.38/x
  3. Step 3: Cross multiply
    3,363.90x = 4,640.31 × 1,966.38
  4. Step 4: Simplify right side
    3,363.90x = 9,124,612.78
  5. Step 5: Solve for x
    x = 9,124,612.78/3,363.90
  6. Step 6: Final answer
    x = 2,712.51

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1.5x scale

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.