Home / 4,921.40-7,383.49-2,148.32

Finding the Fourth Proportional to 4,921.40, 7,383.49 and 2,148.32

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Solution

The fourth proportional to 4,921.40, 7,383.49 and 2,148.32 is: 3,223.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,921.40 : 7,383.49 = 2,148.32 : x
  2. Step 2: Convert to fraction form
    4,921.40/7,383.49 = 2,148.32/x
  3. Step 3: Cross multiply
    4,921.40x = 7,383.49 × 2,148.32
  4. Step 4: Simplify right side
    4,921.40x = 15,862,112.32
  5. Step 5: Solve for x
    x = 15,862,112.32/4,921.40
  6. Step 6: Final answer
    x = 3,223.09

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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.