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Finding the Fourth Proportional to 1,763.98, 2,646.18 and 789.97

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Solution

The fourth proportional to 1,763.98, 2,646.18 and 789.97 is: 1,185.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,763.98 : 2,646.18 = 789.97 : x
  2. Step 2: Convert to fraction form
    1,763.98/2,646.18 = 789.97/x
  3. Step 3: Cross multiply
    1,763.98x = 2,646.18 × 789.97
  4. Step 4: Simplify right side
    1,763.98x = 2,090,402.81
  5. Step 5: Solve for x
    x = 2,090,402.81/1,763.98
  6. Step 6: Final answer
    x = 1,185.05

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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.