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Finding the Fourth Proportional to 5,792.78, 7,994.04 and 3,140.21

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Solution

The fourth proportional to 5,792.78, 7,994.04 and 3,140.21 is: 4,333.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,792.78 : 7,994.04 = 3,140.21 : x
  2. Step 2: Convert to fraction form
    5,792.78/7,994.04 = 3,140.21/x
  3. Step 3: Cross multiply
    5,792.78x = 7,994.04 × 3,140.21
  4. Step 4: Simplify right side
    5,792.78x = 25,102,964.35
  5. Step 5: Solve for x
    x = 25,102,964.35/5,792.78
  6. Step 6: Final answer
    x = 4,333.49

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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.