Home / 1,579.91-2,181.44-1,020.71

Finding the Fourth Proportional to 1,579.91, 2,181.44 and 1,020.71

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Solution

The fourth proportional to 1,579.91, 2,181.44 and 1,020.71 is: 1,409.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,579.91 : 2,181.44 = 1,020.71 : x
  2. Step 2: Convert to fraction form
    1,579.91/2,181.44 = 1,020.71/x
  3. Step 3: Cross multiply
    1,579.91x = 2,181.44 × 1,020.71
  4. Step 4: Simplify right side
    1,579.91x = 2,226,617.97
  5. Step 5: Solve for x
    x = 2,226,617.97/1,579.91
  6. Step 6: Final answer
    x = 1,409.33

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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.