Home / 1,174.19-1,618.82-974.27

Finding the Fourth Proportional to 1,174.19, 1,618.82 and 974.27

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Solution

The fourth proportional to 1,174.19, 1,618.82 and 974.27 is: 1,343.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,174.19 : 1,618.82 = 974.27 : x
  2. Step 2: Convert to fraction form
    1,174.19/1,618.82 = 974.27/x
  3. Step 3: Cross multiply
    1,174.19x = 1,618.82 × 974.27
  4. Step 4: Simplify right side
    1,174.19x = 1,577,167.76
  5. Step 5: Solve for x
    x = 1,577,167.76/1,174.19
  6. Step 6: Final answer
    x = 1,343.20

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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.