Home / 1,997.91-2,976.78-1,886.13

Finding the Fourth Proportional to 1,997.91, 2,976.78 and 1,886.13

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Solution

The fourth proportional to 1,997.91, 2,976.78 and 1,886.13 is: 2,810.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,997.91 : 2,976.78 = 1,886.13 : x
  2. Step 2: Convert to fraction form
    1,997.91/2,976.78 = 1,886.13/x
  3. Step 3: Cross multiply
    1,997.91x = 2,976.78 × 1,886.13
  4. Step 4: Simplify right side
    1,997.91x = 5,614,594.06
  5. Step 5: Solve for x
    x = 5,614,594.06/1,997.91
  6. Step 6: Final answer
    x = 2,810.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.