Home / 2,143.76-2,958.44-1,212.24

Finding the Fourth Proportional to 2,143.76, 2,958.44 and 1,212.24

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Solution

The fourth proportional to 2,143.76, 2,958.44 and 1,212.24 is: 1,672.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,143.76 : 2,958.44 = 1,212.24 : x
  2. Step 2: Convert to fraction form
    2,143.76/2,958.44 = 1,212.24/x
  3. Step 3: Cross multiply
    2,143.76x = 2,958.44 × 1,212.24
  4. Step 4: Simplify right side
    2,143.76x = 3,586,339.31
  5. Step 5: Solve for x
    x = 3,586,339.31/2,143.76
  6. Step 6: Final answer
    x = 1,672.92

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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.