Home / 1,812.09-2,718.03-579.18

Finding the Fourth Proportional to 1,812.09, 2,718.03 and 579.18

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Solution

The fourth proportional to 1,812.09, 2,718.03 and 579.18 is: 868.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,812.09 : 2,718.03 = 579.18 : x
  2. Step 2: Convert to fraction form
    1,812.09/2,718.03 = 579.18/x
  3. Step 3: Cross multiply
    1,812.09x = 2,718.03 × 579.18
  4. Step 4: Simplify right side
    1,812.09x = 1,574,228.62
  5. Step 5: Solve for x
    x = 1,574,228.62/1,812.09
  6. Step 6: Final answer
    x = 868.74

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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.