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Finding the Fourth Proportional to 1,304.19, 1,799.96 and 839.79

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Solution

The fourth proportional to 1,304.19, 1,799.96 and 839.79 is: 1,159.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,304.19 : 1,799.96 = 839.79 : x
  2. Step 2: Convert to fraction form
    1,304.19/1,799.96 = 839.79/x
  3. Step 3: Cross multiply
    1,304.19x = 1,799.96 × 839.79
  4. Step 4: Simplify right side
    1,304.19x = 1,511,584.21
  5. Step 5: Solve for x
    x = 1,511,584.21/1,304.19
  6. Step 6: Final answer
    x = 1,159.02

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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.