Home / 2,072.12-3,105.74-903.08

Finding the Fourth Proportional to 2,072.12, 3,105.74 and 903.08

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Solution

The fourth proportional to 2,072.12, 3,105.74 and 903.08 is: 1,353.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,072.12 : 3,105.74 = 903.08 : x
  2. Step 2: Convert to fraction form
    2,072.12/3,105.74 = 903.08/x
  3. Step 3: Cross multiply
    2,072.12x = 3,105.74 × 903.08
  4. Step 4: Simplify right side
    2,072.12x = 2,804,741.70
  5. Step 5: Solve for x
    x = 2,804,741.70/2,072.12
  6. Step 6: Final answer
    x = 1,353.56

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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.