Home / 1,812.35-2,718.45-579.83

Finding the Fourth Proportional to 1,812.35, 2,718.45 and 579.83

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Solution

The fourth proportional to 1,812.35, 2,718.45 and 579.83 is: 869.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,812.35 : 2,718.45 = 579.83 : x
  2. Step 2: Convert to fraction form
    1,812.35/2,718.45 = 579.83/x
  3. Step 3: Cross multiply
    1,812.35x = 2,718.45 × 579.83
  4. Step 4: Simplify right side
    1,812.35x = 1,576,225.27
  5. Step 5: Solve for x
    x = 1,576,225.27/1,812.35
  6. Step 6: Final answer
    x = 869.71

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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.