Home / 3,119.07-4,304.42-1,721.79

Finding the Fourth Proportional to 3,119.07, 4,304.42 and 1,721.79

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Solution

The fourth proportional to 3,119.07, 4,304.42 and 1,721.79 is: 2,376.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.07 : 4,304.42 = 1,721.79 : x
  2. Step 2: Convert to fraction form
    3,119.07/4,304.42 = 1,721.79/x
  3. Step 3: Cross multiply
    3,119.07x = 4,304.42 × 1,721.79
  4. Step 4: Simplify right side
    3,119.07x = 7,411,298.70
  5. Step 5: Solve for x
    x = 7,411,298.70/3,119.07
  6. Step 6: Final answer
    x = 2,376.12

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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.