Home / 2,169.18-2,991.06-1,382.94

Finding the Fourth Proportional to 2,169.18, 2,991.06 and 1,382.94

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Solution

The fourth proportional to 2,169.18, 2,991.06 and 1,382.94 is: 1,906.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,169.18 : 2,991.06 = 1,382.94 : x
  2. Step 2: Convert to fraction form
    2,169.18/2,991.06 = 1,382.94/x
  3. Step 3: Cross multiply
    2,169.18x = 2,991.06 × 1,382.94
  4. Step 4: Simplify right side
    2,169.18x = 4,136,456.52
  5. Step 5: Solve for x
    x = 4,136,456.52/2,169.18
  6. Step 6: Final answer
    x = 1,906.92

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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.