Home / 1,812.22-2,718.60-579.52

Finding the Fourth Proportional to 1,812.22, 2,718.60 and 579.52

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Solution

The fourth proportional to 1,812.22, 2,718.60 and 579.52 is: 869.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,812.22 : 2,718.60 = 579.52 : x
  2. Step 2: Convert to fraction form
    1,812.22/2,718.60 = 579.52/x
  3. Step 3: Cross multiply
    1,812.22x = 2,718.60 × 579.52
  4. Step 4: Simplify right side
    1,812.22x = 1,575,483.07
  5. Step 5: Solve for x
    x = 1,575,483.07/1,812.22
  6. Step 6: Final answer
    x = 869.37

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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.