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Finding the Fourth Proportional to 3,729.78, 5,147.13 and 2,051.15

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Solution

The fourth proportional to 3,729.78, 5,147.13 and 2,051.15 is: 2,830.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,729.78 : 5,147.13 = 2,051.15 : x
  2. Step 2: Convert to fraction form
    3,729.78/5,147.13 = 2,051.15/x
  3. Step 3: Cross multiply
    3,729.78x = 5,147.13 × 2,051.15
  4. Step 4: Simplify right side
    3,729.78x = 10,557,509.96
  5. Step 5: Solve for x
    x = 10,557,509.96/3,729.78
  6. Step 6: Final answer
    x = 2,830.60

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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.