Home / 2,555.70-3,829.74-1,321.46

Finding the Fourth Proportional to 2,555.70, 3,829.74 and 1,321.46

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Solution

The fourth proportional to 2,555.70, 3,829.74 and 1,321.46 is: 1,980.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,555.70 : 3,829.74 = 1,321.46 : x
  2. Step 2: Convert to fraction form
    2,555.70/3,829.74 = 1,321.46/x
  3. Step 3: Cross multiply
    2,555.70x = 3,829.74 × 1,321.46
  4. Step 4: Simplify right side
    2,555.70x = 5,060,843.43
  5. Step 5: Solve for x
    x = 5,060,843.43/2,555.70
  6. Step 6: Final answer
    x = 1,980.22

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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.