Home / 3,119.14-4,304.40-1,721.86

Finding the Fourth Proportional to 3,119.14, 4,304.40 and 1,721.86

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Solution

The fourth proportional to 3,119.14, 4,304.40 and 1,721.86 is: 2,376.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.14 : 4,304.40 = 1,721.86 : x
  2. Step 2: Convert to fraction form
    3,119.14/4,304.40 = 1,721.86/x
  3. Step 3: Cross multiply
    3,119.14x = 4,304.40 × 1,721.86
  4. Step 4: Simplify right side
    3,119.14x = 7,411,574.18
  5. Step 5: Solve for x
    x = 7,411,574.18/3,119.14
  6. Step 6: Final answer
    x = 2,376.16

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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.