Home / 2,554.43-3,829.70-1,321.05

Finding the Fourth Proportional to 2,554.43, 3,829.70 and 1,321.05

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Solution

The fourth proportional to 2,554.43, 3,829.70 and 1,321.05 is: 1,980.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,554.43 : 3,829.70 = 1,321.05 : x
  2. Step 2: Convert to fraction form
    2,554.43/3,829.70 = 1,321.05/x
  3. Step 3: Cross multiply
    2,554.43x = 3,829.70 × 1,321.05
  4. Step 4: Simplify right side
    2,554.43x = 5,059,225.19
  5. Step 5: Solve for x
    x = 5,059,225.19/2,554.43
  6. Step 6: Final answer
    x = 1,980.57

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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.