Home / 1,819.51-2,512.70-1,555.99

Finding the Fourth Proportional to 1,819.51, 2,512.70 and 1,555.99

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Solution

The fourth proportional to 1,819.51, 2,512.70 and 1,555.99 is: 2,148.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,819.51 : 2,512.70 = 1,555.99 : x
  2. Step 2: Convert to fraction form
    1,819.51/2,512.70 = 1,555.99/x
  3. Step 3: Cross multiply
    1,819.51x = 2,512.70 × 1,555.99
  4. Step 4: Simplify right side
    1,819.51x = 3,909,736.07
  5. Step 5: Solve for x
    x = 3,909,736.07/1,819.51
  6. Step 6: Final answer
    x = 2,148.79

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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.