Home / 2,090.37-3,135.15-1,986.30

Finding the Fourth Proportional to 2,090.37, 3,135.15 and 1,986.30

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Solution

The fourth proportional to 2,090.37, 3,135.15 and 1,986.30 is: 2,979.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,090.37 : 3,135.15 = 1,986.30 : x
  2. Step 2: Convert to fraction form
    2,090.37/3,135.15 = 1,986.30/x
  3. Step 3: Cross multiply
    2,090.37x = 3,135.15 × 1,986.30
  4. Step 4: Simplify right side
    2,090.37x = 6,227,348.45
  5. Step 5: Solve for x
    x = 6,227,348.45/2,090.37
  6. Step 6: Final answer
    x = 2,979.07

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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.