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Finding the Fourth Proportional to 3,702.57, 5,108.08 and 2,129.82

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Solution

The fourth proportional to 3,702.57, 5,108.08 and 2,129.82 is: 2,938.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,702.57 : 5,108.08 = 2,129.82 : x
  2. Step 2: Convert to fraction form
    3,702.57/5,108.08 = 2,129.82/x
  3. Step 3: Cross multiply
    3,702.57x = 5,108.08 × 2,129.82
  4. Step 4: Simplify right side
    3,702.57x = 10,879,290.95
  5. Step 5: Solve for x
    x = 10,879,290.95/3,702.57
  6. Step 6: Final answer
    x = 2,938.31

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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.