Home / 2,321.67-3,205.40-2,072.57

Finding the Fourth Proportional to 2,321.67, 3,205.40 and 2,072.57

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Solution

The fourth proportional to 2,321.67, 3,205.40 and 2,072.57 is: 2,861.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,321.67 : 3,205.40 = 2,072.57 : x
  2. Step 2: Convert to fraction form
    2,321.67/3,205.40 = 2,072.57/x
  3. Step 3: Cross multiply
    2,321.67x = 3,205.40 × 2,072.57
  4. Step 4: Simplify right side
    2,321.67x = 6,643,389.49
  5. Step 5: Solve for x
    x = 6,643,389.49/2,321.67
  6. Step 6: Final answer
    x = 2,861.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.