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Finding the Fourth Proportional to 5,172.88, 7,138.27 and 2,935.30

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Solution

The fourth proportional to 5,172.88, 7,138.27 and 2,935.30 is: 4,050.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,172.88 : 7,138.27 = 2,935.30 : x
  2. Step 2: Convert to fraction form
    5,172.88/7,138.27 = 2,935.30/x
  3. Step 3: Cross multiply
    5,172.88x = 7,138.27 × 2,935.30
  4. Step 4: Simplify right side
    5,172.88x = 20,952,963.93
  5. Step 5: Solve for x
    x = 20,952,963.93/5,172.88
  6. Step 6: Final answer
    x = 4,050.54

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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.