Home / 1,819.53-2,507.62-1,321.30

Finding the Fourth Proportional to 1,819.53, 2,507.62 and 1,321.30

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Solution

The fourth proportional to 1,819.53, 2,507.62 and 1,321.30 is: 1,820.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,819.53 : 2,507.62 = 1,321.30 : x
  2. Step 2: Convert to fraction form
    1,819.53/2,507.62 = 1,321.30/x
  3. Step 3: Cross multiply
    1,819.53x = 2,507.62 × 1,321.30
  4. Step 4: Simplify right side
    1,819.53x = 3,313,329.53
  5. Step 5: Solve for x
    x = 3,313,329.53/1,819.53
  6. Step 6: Final answer
    x = 1,820.98

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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.