Home / 2,187.88-3,279.48-1,090.08

Finding the Fourth Proportional to 2,187.88, 3,279.48 and 1,090.08

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Solution

The fourth proportional to 2,187.88, 3,279.48 and 1,090.08 is: 1,633.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187.88 : 3,279.48 = 1,090.08 : x
  2. Step 2: Convert to fraction form
    2,187.88/3,279.48 = 1,090.08/x
  3. Step 3: Cross multiply
    2,187.88x = 3,279.48 × 1,090.08
  4. Step 4: Simplify right side
    2,187.88x = 3,574,895.56
  5. Step 5: Solve for x
    x = 3,574,895.56/2,187.88
  6. Step 6: Final answer
    x = 1,633.95

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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.