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Finding the Fourth Proportional to 3,383.90, 5,076.21 and 1,074.86

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Solution

The fourth proportional to 3,383.90, 5,076.21 and 1,074.86 is: 1,612.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,383.90 : 5,076.21 = 1,074.86 : x
  2. Step 2: Convert to fraction form
    3,383.90/5,076.21 = 1,074.86/x
  3. Step 3: Cross multiply
    3,383.90x = 5,076.21 × 1,074.86
  4. Step 4: Simplify right side
    3,383.90x = 5,456,215.08
  5. Step 5: Solve for x
    x = 5,456,215.08/3,383.90
  6. Step 6: Final answer
    x = 1,612.40

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1.5x scale

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.