Home / 1,512.47-2,272.77-819.65

Finding the Fourth Proportional to 1,512.47, 2,272.77 and 819.65

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Solution

The fourth proportional to 1,512.47, 2,272.77 and 819.65 is: 1,231.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,512.47 : 2,272.77 = 819.65 : x
  2. Step 2: Convert to fraction form
    1,512.47/2,272.77 = 819.65/x
  3. Step 3: Cross multiply
    1,512.47x = 2,272.77 × 819.65
  4. Step 4: Simplify right side
    1,512.47x = 1,862,875.93
  5. Step 5: Solve for x
    x = 1,862,875.93/1,512.47
  6. Step 6: Final answer
    x = 1,231.68

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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.