Home / 3,119.28-4,304.58-1,722

Finding the Fourth Proportional to 3,119.28, 4,304.58 and 1,722

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Solution

The fourth proportional to 3,119.28, 4,304.58 and 1,722 is: 2,376.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.28 : 4,304.58 = 1,722 : x
  2. Step 2: Convert to fraction form
    3,119.28/4,304.58 = 1,722/x
  3. Step 3: Cross multiply
    3,119.28x = 4,304.58 × 1,722
  4. Step 4: Simplify right side
    3,119.28x = 7,412,486.76
  5. Step 5: Solve for x
    x = 7,412,486.76/3,119.28
  6. Step 6: Final answer
    x = 2,376.35

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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.