Home / 2,156.92-2,976.58-1,212.76

Finding the Fourth Proportional to 2,156.92, 2,976.58 and 1,212.76

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Solution

The fourth proportional to 2,156.92, 2,976.58 and 1,212.76 is: 1,673.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,156.92 : 2,976.58 = 1,212.76 : x
  2. Step 2: Convert to fraction form
    2,156.92/2,976.58 = 1,212.76/x
  3. Step 3: Cross multiply
    2,156.92x = 2,976.58 × 1,212.76
  4. Step 4: Simplify right side
    2,156.92x = 3,609,877.16
  5. Step 5: Solve for x
    x = 3,609,877.16/2,156.92
  6. Step 6: Final answer
    x = 1,673.63

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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.