Home / 3,920.54-5,410.49-2,152.31

Finding the Fourth Proportional to 3,920.54, 5,410.49 and 2,152.31

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Solution

The fourth proportional to 3,920.54, 5,410.49 and 2,152.31 is: 2,970.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,920.54 : 5,410.49 = 2,152.31 : x
  2. Step 2: Convert to fraction form
    3,920.54/5,410.49 = 2,152.31/x
  3. Step 3: Cross multiply
    3,920.54x = 5,410.49 × 2,152.31
  4. Step 4: Simplify right side
    3,920.54x = 11,645,013.92
  5. Step 5: Solve for x
    x = 11,645,013.92/3,920.54
  6. Step 6: Final answer
    x = 2,970.26

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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.