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Finding the Fourth Proportional to 2,702.59, 3,726.21 and 2,255.11

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Solution

The fourth proportional to 2,702.59, 3,726.21 and 2,255.11 is: 3,109.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,702.59 : 3,726.21 = 2,255.11 : x
  2. Step 2: Convert to fraction form
    2,702.59/3,726.21 = 2,255.11/x
  3. Step 3: Cross multiply
    2,702.59x = 3,726.21 × 2,255.11
  4. Step 4: Simplify right side
    2,702.59x = 8,403,013.43
  5. Step 5: Solve for x
    x = 8,403,013.43/2,702.59
  6. Step 6: Final answer
    x = 3,109.25

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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.