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Finding the Fourth Proportional to 3,085.91, 4,259.96 and 1,968.38

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Solution

The fourth proportional to 3,085.91, 4,259.96 and 1,968.38 is: 2,717.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,085.91 : 4,259.96 = 1,968.38 : x
  2. Step 2: Convert to fraction form
    3,085.91/4,259.96 = 1,968.38/x
  3. Step 3: Cross multiply
    3,085.91x = 4,259.96 × 1,968.38
  4. Step 4: Simplify right side
    3,085.91x = 8,385,220.06
  5. Step 5: Solve for x
    x = 8,385,220.06/3,085.91
  6. Step 6: Final answer
    x = 2,717.26

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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.