Home / 3,921.32-5,412.44-2,428.36

Finding the Fourth Proportional to 3,921.32, 5,412.44 and 2,428.36

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Solution

The fourth proportional to 3,921.32, 5,412.44 and 2,428.36 is: 3,351.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,921.32 : 5,412.44 = 2,428.36 : x
  2. Step 2: Convert to fraction form
    3,921.32/5,412.44 = 2,428.36/x
  3. Step 3: Cross multiply
    3,921.32x = 5,412.44 × 2,428.36
  4. Step 4: Simplify right side
    3,921.32x = 13,143,345.34
  5. Step 5: Solve for x
    x = 13,143,345.34/3,921.32
  6. Step 6: Final answer
    x = 3,351.76

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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.