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Finding the Fourth Proportional to 2,755.70, 3,803.58 and 1,636.95

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Solution

The fourth proportional to 2,755.70, 3,803.58 and 1,636.95 is: 2,259.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,755.70 : 3,803.58 = 1,636.95 : x
  2. Step 2: Convert to fraction form
    2,755.70/3,803.58 = 1,636.95/x
  3. Step 3: Cross multiply
    2,755.70x = 3,803.58 × 1,636.95
  4. Step 4: Simplify right side
    2,755.70x = 6,226,270.28
  5. Step 5: Solve for x
    x = 6,226,270.28/2,755.70
  6. Step 6: Final answer
    x = 2,259.42

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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.