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Finding the Fourth Proportional to 3,659.92, 5,490.05 and 1,194.78

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Solution

The fourth proportional to 3,659.92, 5,490.05 and 1,194.78 is: 1,792.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,659.92 : 5,490.05 = 1,194.78 : x
  2. Step 2: Convert to fraction form
    3,659.92/5,490.05 = 1,194.78/x
  3. Step 3: Cross multiply
    3,659.92x = 5,490.05 × 1,194.78
  4. Step 4: Simplify right side
    3,659.92x = 6,559,401.94
  5. Step 5: Solve for x
    x = 6,559,401.94/3,659.92
  6. Step 6: Final answer
    x = 1,792.23

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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.