Home / 2,090.12-3,134.38-1,115.68

Finding the Fourth Proportional to 2,090.12, 3,134.38 and 1,115.68

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Solution

The fourth proportional to 2,090.12, 3,134.38 and 1,115.68 is: 1,673.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,090.12 : 3,134.38 = 1,115.68 : x
  2. Step 2: Convert to fraction form
    2,090.12/3,134.38 = 1,115.68/x
  3. Step 3: Cross multiply
    2,090.12x = 3,134.38 × 1,115.68
  4. Step 4: Simplify right side
    2,090.12x = 3,496,965.08
  5. Step 5: Solve for x
    x = 3,496,965.08/2,090.12
  6. Step 6: Final answer
    x = 1,673.09

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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.