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Finding the Fourth Proportional to 1,718.19, 2,578.11 and 793.29

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Solution

The fourth proportional to 1,718.19, 2,578.11 and 793.29 is: 1,190.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,718.19 : 2,578.11 = 793.29 : x
  2. Step 2: Convert to fraction form
    1,718.19/2,578.11 = 793.29/x
  3. Step 3: Cross multiply
    1,718.19x = 2,578.11 × 793.29
  4. Step 4: Simplify right side
    1,718.19x = 2,045,188.88
  5. Step 5: Solve for x
    x = 2,045,188.88/1,718.19
  6. Step 6: Final answer
    x = 1,190.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.