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Finding the Fourth Proportional to 1,817, 2,508.18 and 1,197.80

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Solution

The fourth proportional to 1,817, 2,508.18 and 1,197.80 is: 1,653.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,817 : 2,508.18 = 1,197.80 : x
  2. Step 2: Convert to fraction form
    1,817/2,508.18 = 1,197.80/x
  3. Step 3: Cross multiply
    1,817x = 2,508.18 × 1,197.80
  4. Step 4: Simplify right side
    1,817x = 3,004,298.00
  5. Step 5: Solve for x
    x = 3,004,298.00/1,817
  6. Step 6: Final answer
    x = 1,653.44

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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.