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Finding the Fourth Proportional to 1,770.67, 2,443.62 and 984.79

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Solution

The fourth proportional to 1,770.67, 2,443.62 and 984.79 is: 1,359.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,770.67 : 2,443.62 = 984.79 : x
  2. Step 2: Convert to fraction form
    1,770.67/2,443.62 = 984.79/x
  3. Step 3: Cross multiply
    1,770.67x = 2,443.62 × 984.79
  4. Step 4: Simplify right side
    1,770.67x = 2,406,452.54
  5. Step 5: Solve for x
    x = 2,406,452.54/1,770.67
  6. Step 6: Final answer
    x = 1,359.06

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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.