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Finding the Fourth Proportional to 3,792.86, 5,686.91 and 1,159.49

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Solution

The fourth proportional to 3,792.86, 5,686.91 and 1,159.49 is: 1,738.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,792.86 : 5,686.91 = 1,159.49 : x
  2. Step 2: Convert to fraction form
    3,792.86/5,686.91 = 1,159.49/x
  3. Step 3: Cross multiply
    3,792.86x = 5,686.91 × 1,159.49
  4. Step 4: Simplify right side
    3,792.86x = 6,593,915.28
  5. Step 5: Solve for x
    x = 6,593,915.28/3,792.86
  6. Step 6: Final answer
    x = 1,738.51

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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.