Home / 1,618.30-2,231.87-1,367.45

Finding the Fourth Proportional to 1,618.30, 2,231.87 and 1,367.45

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Solution

The fourth proportional to 1,618.30, 2,231.87 and 1,367.45 is: 1,885.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,618.30 : 2,231.87 = 1,367.45 : x
  2. Step 2: Convert to fraction form
    1,618.30/2,231.87 = 1,367.45/x
  3. Step 3: Cross multiply
    1,618.30x = 2,231.87 × 1,367.45
  4. Step 4: Simplify right side
    1,618.30x = 3,051,974.05
  5. Step 5: Solve for x
    x = 3,051,974.05/1,618.30
  6. Step 6: Final answer
    x = 1,885.92

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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.