Home / 2,090.24-3,135.36-857.37

Finding the Fourth Proportional to 2,090.24, 3,135.36 and 857.37

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Solution

The fourth proportional to 2,090.24, 3,135.36 and 857.37 is: 1,286.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,090.24 : 3,135.36 = 857.37 : x
  2. Step 2: Convert to fraction form
    2,090.24/3,135.36 = 857.37/x
  3. Step 3: Cross multiply
    2,090.24x = 3,135.36 × 857.37
  4. Step 4: Simplify right side
    2,090.24x = 2,688,163.60
  5. Step 5: Solve for x
    x = 2,688,163.60/2,090.24
  6. Step 6: Final answer
    x = 1,286.06

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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.