Home / 2,189.68-3,021.77-1,195.07

Finding the Fourth Proportional to 2,189.68, 3,021.77 and 1,195.07

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Solution

The fourth proportional to 2,189.68, 3,021.77 and 1,195.07 is: 1,649.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,189.68 : 3,021.77 = 1,195.07 : x
  2. Step 2: Convert to fraction form
    2,189.68/3,021.77 = 1,195.07/x
  3. Step 3: Cross multiply
    2,189.68x = 3,021.77 × 1,195.07
  4. Step 4: Simplify right side
    2,189.68x = 3,611,214.55
  5. Step 5: Solve for x
    x = 3,611,214.55/2,189.68
  6. Step 6: Final answer
    x = 1,649.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.