Home / 3,921.21-5,411.64-2,242.28

Finding the Fourth Proportional to 3,921.21, 5,411.64 and 2,242.28

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Solution

The fourth proportional to 3,921.21, 5,411.64 and 2,242.28 is: 3,094.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,921.21 : 5,411.64 = 2,242.28 : x
  2. Step 2: Convert to fraction form
    3,921.21/5,411.64 = 2,242.28/x
  3. Step 3: Cross multiply
    3,921.21x = 5,411.64 × 2,242.28
  4. Step 4: Simplify right side
    3,921.21x = 12,134,434.08
  5. Step 5: Solve for x
    x = 12,134,434.08/3,921.21
  6. Step 6: Final answer
    x = 3,094.56

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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.