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Finding the Fourth Proportional to 2,755.17, 3,800.43 and 1,811.07

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Solution

The fourth proportional to 2,755.17, 3,800.43 and 1,811.07 is: 2,498.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,755.17 : 3,800.43 = 1,811.07 : x
  2. Step 2: Convert to fraction form
    2,755.17/3,800.43 = 1,811.07/x
  3. Step 3: Cross multiply
    2,755.17x = 3,800.43 × 1,811.07
  4. Step 4: Simplify right side
    2,755.17x = 6,882,844.76
  5. Step 5: Solve for x
    x = 6,882,844.76/2,755.17
  6. Step 6: Final answer
    x = 2,498.16

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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.