Home / 3,119.23-4,304.57-1,721.98

Finding the Fourth Proportional to 3,119.23, 4,304.57 and 1,721.98

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Solution

The fourth proportional to 3,119.23, 4,304.57 and 1,721.98 is: 2,376.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.23 : 4,304.57 = 1,721.98 : x
  2. Step 2: Convert to fraction form
    3,119.23/4,304.57 = 1,721.98/x
  3. Step 3: Cross multiply
    3,119.23x = 4,304.57 × 1,721.98
  4. Step 4: Simplify right side
    3,119.23x = 7,412,383.45
  5. Step 5: Solve for x
    x = 7,412,383.45/3,119.23
  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.