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Finding the Fourth Proportional to 3,391.62, 5,087.74 and 1,051.64

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Solution

The fourth proportional to 3,391.62, 5,087.74 and 1,051.64 is: 1,577.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,391.62 : 5,087.74 = 1,051.64 : x
  2. Step 2: Convert to fraction form
    3,391.62/5,087.74 = 1,051.64/x
  3. Step 3: Cross multiply
    3,391.62x = 5,087.74 × 1,051.64
  4. Step 4: Simplify right side
    3,391.62x = 5,350,470.89
  5. Step 5: Solve for x
    x = 5,350,470.89/3,391.62
  6. Step 6: Final answer
    x = 1,577.56

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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.