Home / 2,257.57-3,121.50-1,980.82

Finding the Fourth Proportional to 2,257.57, 3,121.50 and 1,980.82

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Solution

The fourth proportional to 2,257.57, 3,121.50 and 1,980.82 is: 2,738.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,257.57 : 3,121.50 = 1,980.82 : x
  2. Step 2: Convert to fraction form
    2,257.57/3,121.50 = 1,980.82/x
  3. Step 3: Cross multiply
    2,257.57x = 3,121.50 × 1,980.82
  4. Step 4: Simplify right side
    2,257.57x = 6,183,129.63
  5. Step 5: Solve for x
    x = 6,183,129.63/2,257.57
  6. Step 6: Final answer
    x = 2,738.84

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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.