Home / 1,819.92-2,509.86-1,231.25

Finding the Fourth Proportional to 1,819.92, 2,509.86 and 1,231.25

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Solution

The fourth proportional to 1,819.92, 2,509.86 and 1,231.25 is: 1,698.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,819.92 : 2,509.86 = 1,231.25 : x
  2. Step 2: Convert to fraction form
    1,819.92/2,509.86 = 1,231.25/x
  3. Step 3: Cross multiply
    1,819.92x = 2,509.86 × 1,231.25
  4. Step 4: Simplify right side
    1,819.92x = 3,090,265.13
  5. Step 5: Solve for x
    x = 3,090,265.13/1,819.92
  6. Step 6: Final answer
    x = 1,698.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.