Home / 1,456.20-2,183.68-578.56

Finding the Fourth Proportional to 1,456.20, 2,183.68 and 578.56

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Solution

The fourth proportional to 1,456.20, 2,183.68 and 578.56 is: 867.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,456.20 : 2,183.68 = 578.56 : x
  2. Step 2: Convert to fraction form
    1,456.20/2,183.68 = 578.56/x
  3. Step 3: Cross multiply
    1,456.20x = 2,183.68 × 578.56
  4. Step 4: Simplify right side
    1,456.20x = 1,263,389.90
  5. Step 5: Solve for x
    x = 1,263,389.90/1,456.20
  6. Step 6: Final answer
    x = 867.59

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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.