Home / 1,905.57-2,858.53-518.92

Finding the Fourth Proportional to 1,905.57, 2,858.53 and 518.92

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Solution

The fourth proportional to 1,905.57, 2,858.53 and 518.92 is: 778.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,905.57 : 2,858.53 = 518.92 : x
  2. Step 2: Convert to fraction form
    1,905.57/2,858.53 = 518.92/x
  3. Step 3: Cross multiply
    1,905.57x = 2,858.53 × 518.92
  4. Step 4: Simplify right side
    1,905.57x = 1,483,334.09
  5. Step 5: Solve for x
    x = 1,483,334.09/1,905.57
  6. Step 6: Final answer
    x = 778.42

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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.