Home / 3,119.84-4,682.32-1,581.28

Finding the Fourth Proportional to 3,119.84, 4,682.32 and 1,581.28

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Solution

The fourth proportional to 3,119.84, 4,682.32 and 1,581.28 is: 2,373.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.84 : 4,682.32 = 1,581.28 : x
  2. Step 2: Convert to fraction form
    3,119.84/4,682.32 = 1,581.28/x
  3. Step 3: Cross multiply
    3,119.84x = 4,682.32 × 1,581.28
  4. Step 4: Simplify right side
    3,119.84x = 7,404,058.97
  5. Step 5: Solve for x
    x = 7,404,058.97/3,119.84
  6. Step 6: Final answer
    x = 2,373.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.