Home / 2,782.14-4,174.63-1,321.31

Finding the Fourth Proportional to 2,782.14, 4,174.63 and 1,321.31

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Solution

The fourth proportional to 2,782.14, 4,174.63 and 1,321.31 is: 1,982.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,782.14 : 4,174.63 = 1,321.31 : x
  2. Step 2: Convert to fraction form
    2,782.14/4,174.63 = 1,321.31/x
  3. Step 3: Cross multiply
    2,782.14x = 4,174.63 × 1,321.31
  4. Step 4: Simplify right side
    2,782.14x = 5,515,956.19
  5. Step 5: Solve for x
    x = 5,515,956.19/2,782.14
  6. Step 6: Final answer
    x = 1,982.63

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1.5x scale

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.