Home / 2,922.01-4,029.58-1,912.21

Finding the Fourth Proportional to 2,922.01, 4,029.58 and 1,912.21

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Solution

The fourth proportional to 2,922.01, 4,029.58 and 1,912.21 is: 2,637.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,922.01 : 4,029.58 = 1,912.21 : x
  2. Step 2: Convert to fraction form
    2,922.01/4,029.58 = 1,912.21/x
  3. Step 3: Cross multiply
    2,922.01x = 4,029.58 × 1,912.21
  4. Step 4: Simplify right side
    2,922.01x = 7,705,395.49
  5. Step 5: Solve for x
    x = 7,705,395.49/2,922.01
  6. Step 6: Final answer
    x = 2,637.02

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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.