Home / 3,920.45-5,410.19-2,152.06

Finding the Fourth Proportional to 3,920.45, 5,410.19 and 2,152.06

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Solution

The fourth proportional to 3,920.45, 5,410.19 and 2,152.06 is: 2,969.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,920.45 : 5,410.19 = 2,152.06 : x
  2. Step 2: Convert to fraction form
    3,920.45/5,410.19 = 2,152.06/x
  3. Step 3: Cross multiply
    3,920.45x = 5,410.19 × 2,152.06
  4. Step 4: Simplify right side
    3,920.45x = 11,643,045.35
  5. Step 5: Solve for x
    x = 11,643,045.35/3,920.45
  6. Step 6: Final answer
    x = 2,969.83

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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.