Home / 2,782.35-4,173.30-1,138.46

Finding the Fourth Proportional to 2,782.35, 4,173.30 and 1,138.46

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Solution

The fourth proportional to 2,782.35, 4,173.30 and 1,138.46 is: 1,707.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,782.35 : 4,173.30 = 1,138.46 : x
  2. Step 2: Convert to fraction form
    2,782.35/4,173.30 = 1,138.46/x
  3. Step 3: Cross multiply
    2,782.35x = 4,173.30 × 1,138.46
  4. Step 4: Simplify right side
    2,782.35x = 4,751,114.25
  5. Step 5: Solve for x
    x = 4,751,114.25/2,782.35
  6. Step 6: Final answer
    x = 1,707.59

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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.