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Finding the Fourth Proportional to 2,992.28, 4,129.64 and 1,814

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Solution

The fourth proportional to 2,992.28, 4,129.64 and 1,814 is: 2,503.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,992.28 : 4,129.64 = 1,814 : x
  2. Step 2: Convert to fraction form
    2,992.28/4,129.64 = 1,814/x
  3. Step 3: Cross multiply
    2,992.28x = 4,129.64 × 1,814
  4. Step 4: Simplify right side
    2,992.28x = 7,491,166.96
  5. Step 5: Solve for x
    x = 7,491,166.96/2,992.28
  6. Step 6: Final answer
    x = 2,503.50

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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.