Home / 2,912.12-4,021.58-2,114.04

Finding the Fourth Proportional to 2,912.12, 4,021.58 and 2,114.04

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Solution

The fourth proportional to 2,912.12, 4,021.58 and 2,114.04 is: 2,919.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,912.12 : 4,021.58 = 2,114.04 : x
  2. Step 2: Convert to fraction form
    2,912.12/4,021.58 = 2,114.04/x
  3. Step 3: Cross multiply
    2,912.12x = 4,021.58 × 2,114.04
  4. Step 4: Simplify right side
    2,912.12x = 8,501,780.98
  5. Step 5: Solve for x
    x = 8,501,780.98/2,912.12
  6. Step 6: Final answer
    x = 2,919.45

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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.