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Finding the Fourth Proportional to 1,968.75, 2,718.50 and 1,722.92

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Solution

The fourth proportional to 1,968.75, 2,718.50 and 1,722.92 is: 2,379.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,968.75 : 2,718.50 = 1,722.92 : x
  2. Step 2: Convert to fraction form
    1,968.75/2,718.50 = 1,722.92/x
  3. Step 3: Cross multiply
    1,968.75x = 2,718.50 × 1,722.92
  4. Step 4: Simplify right side
    1,968.75x = 4,683,735.81
  5. Step 5: Solve for x
    x = 4,683,735.81/1,968.75
  6. Step 6: Final answer
    x = 2,379.04

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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.