Home / 2,169.15-2,992.91-1,285.17

Finding the Fourth Proportional to 2,169.15, 2,992.91 and 1,285.17

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Solution

The fourth proportional to 2,169.15, 2,992.91 and 1,285.17 is: 1,773.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,169.15 : 2,992.91 = 1,285.17 : x
  2. Step 2: Convert to fraction form
    2,169.15/2,992.91 = 1,285.17/x
  3. Step 3: Cross multiply
    2,169.15x = 2,992.91 × 1,285.17
  4. Step 4: Simplify right side
    2,169.15x = 3,846,391.72
  5. Step 5: Solve for x
    x = 3,846,391.72/2,169.15
  6. Step 6: Final answer
    x = 1,773.23

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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.