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Finding the Fourth Proportional to 3,108.52, 4,290 and 1,711.52

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Solution

The fourth proportional to 3,108.52, 4,290 and 1,711.52 is: 2,362.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,108.52 : 4,290 = 1,711.52 : x
  2. Step 2: Convert to fraction form
    3,108.52/4,290 = 1,711.52/x
  3. Step 3: Cross multiply
    3,108.52x = 4,290 × 1,711.52
  4. Step 4: Simplify right side
    3,108.52x = 7,342,420.80
  5. Step 5: Solve for x
    x = 7,342,420.80/3,108.52
  6. Step 6: Final answer
    x = 2,362.03

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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.