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Finding the Fourth Proportional to 1,798.19, 2,691.69 and 974.42

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Solution

The fourth proportional to 1,798.19, 2,691.69 and 974.42 is: 1,458.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,798.19 : 2,691.69 = 974.42 : x
  2. Step 2: Convert to fraction form
    1,798.19/2,691.69 = 974.42/x
  3. Step 3: Cross multiply
    1,798.19x = 2,691.69 × 974.42
  4. Step 4: Simplify right side
    1,798.19x = 2,622,823.11
  5. Step 5: Solve for x
    x = 2,622,823.11/1,798.19
  6. Step 6: Final answer
    x = 1,458.59

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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.