Home / 3,920.73-5,410.42-2,152.36

Finding the Fourth Proportional to 3,920.73, 5,410.42 and 2,152.36

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Solution

The fourth proportional to 3,920.73, 5,410.42 and 2,152.36 is: 2,970.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,920.73 : 5,410.42 = 2,152.36 : x
  2. Step 2: Convert to fraction form
    3,920.73/5,410.42 = 2,152.36/x
  3. Step 3: Cross multiply
    3,920.73x = 5,410.42 × 2,152.36
  4. Step 4: Simplify right side
    3,920.73x = 11,645,171.59
  5. Step 5: Solve for x
    x = 11,645,171.59/3,920.73
  6. Step 6: Final answer
    x = 2,970.15

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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.