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Finding the Fourth Proportional to 3,137.80, 4,702.78 and 2,746.92

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Solution

The fourth proportional to 3,137.80, 4,702.78 and 2,746.92 is: 4,116.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,137.80 : 4,702.78 = 2,746.92 : x
  2. Step 2: Convert to fraction form
    3,137.80/4,702.78 = 2,746.92/x
  3. Step 3: Cross multiply
    3,137.80x = 4,702.78 × 2,746.92
  4. Step 4: Simplify right side
    3,137.80x = 12,918,160.44
  5. Step 5: Solve for x
    x = 12,918,160.44/3,137.80
  6. Step 6: Final answer
    x = 4,116.95

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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.