Home / 2,133.78-2,944.63-1,189.68

Finding the Fourth Proportional to 2,133.78, 2,944.63 and 1,189.68

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Solution

The fourth proportional to 2,133.78, 2,944.63 and 1,189.68 is: 1,641.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,133.78 : 2,944.63 = 1,189.68 : x
  2. Step 2: Convert to fraction form
    2,133.78/2,944.63 = 1,189.68/x
  3. Step 3: Cross multiply
    2,133.78x = 2,944.63 × 1,189.68
  4. Step 4: Simplify right side
    2,133.78x = 3,503,167.42
  5. Step 5: Solve for x
    x = 3,503,167.42/2,133.78
  6. Step 6: Final answer
    x = 1,641.77

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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.