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Finding the Fourth Proportional to 1,636.68, 2,455.03 and 1,151.90

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Solution

The fourth proportional to 1,636.68, 2,455.03 and 1,151.90 is: 1,727.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,636.68 : 2,455.03 = 1,151.90 : x
  2. Step 2: Convert to fraction form
    1,636.68/2,455.03 = 1,151.90/x
  3. Step 3: Cross multiply
    1,636.68x = 2,455.03 × 1,151.90
  4. Step 4: Simplify right side
    1,636.68x = 2,827,943.11
  5. Step 5: Solve for x
    x = 2,827,943.11/1,636.68
  6. Step 6: Final answer
    x = 1,727.85

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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.