Home / 1,618.10-2,231.25-1,281.44

Finding the Fourth Proportional to 1,618.10, 2,231.25 and 1,281.44

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Solution

The fourth proportional to 1,618.10, 2,231.25 and 1,281.44 is: 1,767.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,618.10 : 2,231.25 = 1,281.44 : x
  2. Step 2: Convert to fraction form
    1,618.10/2,231.25 = 1,281.44/x
  3. Step 3: Cross multiply
    1,618.10x = 2,231.25 × 1,281.44
  4. Step 4: Simplify right side
    1,618.10x = 2,859,201.84
  5. Step 5: Solve for x
    x = 2,859,201.84/1,618.10
  6. Step 6: Final answer
    x = 1,767.02

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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.