Home / 3,380.40-4,664.79-2,122.74

Finding the Fourth Proportional to 3,380.40, 4,664.79 and 2,122.74

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Solution

The fourth proportional to 3,380.40, 4,664.79 and 2,122.74 is: 2,929.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,380.40 : 4,664.79 = 2,122.74 : x
  2. Step 2: Convert to fraction form
    3,380.40/4,664.79 = 2,122.74/x
  3. Step 3: Cross multiply
    3,380.40x = 4,664.79 × 2,122.74
  4. Step 4: Simplify right side
    3,380.40x = 9,902,136.32
  5. Step 5: Solve for x
    x = 9,902,136.32/3,380.40
  6. Step 6: Final answer
    x = 2,929.28

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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.