Home / 2,156.66-2,976.68-1,370.56

Finding the Fourth Proportional to 2,156.66, 2,976.68 and 1,370.56

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Solution

The fourth proportional to 2,156.66, 2,976.68 and 1,370.56 is: 1,891.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,156.66 : 2,976.68 = 1,370.56 : x
  2. Step 2: Convert to fraction form
    2,156.66/2,976.68 = 1,370.56/x
  3. Step 3: Cross multiply
    2,156.66x = 2,976.68 × 1,370.56
  4. Step 4: Simplify right side
    2,156.66x = 4,079,718.54
  5. Step 5: Solve for x
    x = 4,079,718.54/2,156.66
  6. Step 6: Final answer
    x = 1,891.68

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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.