Home / 3,709.87-5,119.63-2,031.28

Finding the Fourth Proportional to 3,709.87, 5,119.63 and 2,031.28

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Solution

The fourth proportional to 3,709.87, 5,119.63 and 2,031.28 is: 2,803.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,709.87 : 5,119.63 = 2,031.28 : x
  2. Step 2: Convert to fraction form
    3,709.87/5,119.63 = 2,031.28/x
  3. Step 3: Cross multiply
    3,709.87x = 5,119.63 × 2,031.28
  4. Step 4: Simplify right side
    3,709.87x = 10,399,391.87
  5. Step 5: Solve for x
    x = 10,399,391.87/3,709.87
  6. Step 6: Final answer
    x = 2,803.17

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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.