Home / 3,709.60-5,119.92-2,116.48

Finding the Fourth Proportional to 3,709.60, 5,119.92 and 2,116.48

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Solution

The fourth proportional to 3,709.60, 5,119.92 and 2,116.48 is: 2,921.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,709.60 : 5,119.92 = 2,116.48 : x
  2. Step 2: Convert to fraction form
    3,709.60/5,119.92 = 2,116.48/x
  3. Step 3: Cross multiply
    3,709.60x = 5,119.92 × 2,116.48
  4. Step 4: Simplify right side
    3,709.60x = 10,836,208.28
  5. Step 5: Solve for x
    x = 10,836,208.28/3,709.60
  6. Step 6: Final answer
    x = 2,921.13

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1.5x scale

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.