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Finding the Fourth Proportional to 2,490.82, 3,731.19 and 1,334.50

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Solution

The fourth proportional to 2,490.82, 3,731.19 and 1,334.50 is: 1,999.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,490.82 : 3,731.19 = 1,334.50 : x
  2. Step 2: Convert to fraction form
    2,490.82/3,731.19 = 1,334.50/x
  3. Step 3: Cross multiply
    2,490.82x = 3,731.19 × 1,334.50
  4. Step 4: Simplify right side
    2,490.82x = 4,979,273.06
  5. Step 5: Solve for x
    x = 4,979,273.06/2,490.82
  6. Step 6: Final answer
    x = 1,999.05

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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.