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Finding the Fourth Proportional to 1,803.66, 2,490.75 and 1,672.62

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Solution

The fourth proportional to 1,803.66, 2,490.75 and 1,672.62 is: 2,309.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,803.66 : 2,490.75 = 1,672.62 : x
  2. Step 2: Convert to fraction form
    1,803.66/2,490.75 = 1,672.62/x
  3. Step 3: Cross multiply
    1,803.66x = 2,490.75 × 1,672.62
  4. Step 4: Simplify right side
    1,803.66x = 4,166,078.27
  5. Step 5: Solve for x
    x = 4,166,078.27/1,803.66
  6. Step 6: Final answer
    x = 2,309.79

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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.