Home / 1,812.25-2,718.57-579.37

Finding the Fourth Proportional to 1,812.25, 2,718.57 and 579.37

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Solution

The fourth proportional to 1,812.25, 2,718.57 and 579.37 is: 869.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,812.25 : 2,718.57 = 579.37 : x
  2. Step 2: Convert to fraction form
    1,812.25/2,718.57 = 579.37/x
  3. Step 3: Cross multiply
    1,812.25x = 2,718.57 × 579.37
  4. Step 4: Simplify right side
    1,812.25x = 1,575,051.10
  5. Step 5: Solve for x
    x = 1,575,051.10/1,812.25
  6. Step 6: Final answer
    x = 869.11

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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.