Home / 3,290.32-4,939.98-2,122.06

Finding the Fourth Proportional to 3,290.32, 4,939.98 and 2,122.06

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Solution

The fourth proportional to 3,290.32, 4,939.98 and 2,122.06 is: 3,185.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,290.32 : 4,939.98 = 2,122.06 : x
  2. Step 2: Convert to fraction form
    3,290.32/4,939.98 = 2,122.06/x
  3. Step 3: Cross multiply
    3,290.32x = 4,939.98 × 2,122.06
  4. Step 4: Simplify right side
    3,290.32x = 10,482,933.96
  5. Step 5: Solve for x
    x = 10,482,933.96/3,290.32
  6. Step 6: Final answer
    x = 3,185.99

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1.5x scale

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.