Home / 1,812.08-2,718.14-579.49

Finding the Fourth Proportional to 1,812.08, 2,718.14 and 579.49

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Solution

The fourth proportional to 1,812.08, 2,718.14 and 579.49 is: 869.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,812.08 : 2,718.14 = 579.49 : x
  2. Step 2: Convert to fraction form
    1,812.08/2,718.14 = 579.49/x
  3. Step 3: Cross multiply
    1,812.08x = 2,718.14 × 579.49
  4. Step 4: Simplify right side
    1,812.08x = 1,575,125.26
  5. Step 5: Solve for x
    x = 1,575,125.26/1,812.08
  6. Step 6: Final answer
    x = 869.23

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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.