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Finding the Fourth Proportional to 1,814.52, 2,721.72 and 993.18

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Solution

The fourth proportional to 1,814.52, 2,721.72 and 993.18 is: 1,489.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,814.52 : 2,721.72 = 993.18 : x
  2. Step 2: Convert to fraction form
    1,814.52/2,721.72 = 993.18/x
  3. Step 3: Cross multiply
    1,814.52x = 2,721.72 × 993.18
  4. Step 4: Simplify right side
    1,814.52x = 2,703,157.87
  5. Step 5: Solve for x
    x = 2,703,157.87/1,814.52
  6. Step 6: Final answer
    x = 1,489.74

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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.