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Finding the Fourth Proportional to 2,685.48, 3,696.86 and 2,310.28

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Solution

The fourth proportional to 2,685.48, 3,696.86 and 2,310.28 is: 3,180.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,685.48 : 3,696.86 = 2,310.28 : x
  2. Step 2: Convert to fraction form
    2,685.48/3,696.86 = 2,310.28/x
  3. Step 3: Cross multiply
    2,685.48x = 3,696.86 × 2,310.28
  4. Step 4: Simplify right side
    2,685.48x = 8,540,781.72
  5. Step 5: Solve for x
    x = 8,540,781.72/2,685.48
  6. Step 6: Final answer
    x = 3,180.36

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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.