Home / 2,308.78-3,186.57-1,609.75

Finding the Fourth Proportional to 2,308.78, 3,186.57 and 1,609.75

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Solution

The fourth proportional to 2,308.78, 3,186.57 and 1,609.75 is: 2,221.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,308.78 : 3,186.57 = 1,609.75 : x
  2. Step 2: Convert to fraction form
    2,308.78/3,186.57 = 1,609.75/x
  3. Step 3: Cross multiply
    2,308.78x = 3,186.57 × 1,609.75
  4. Step 4: Simplify right side
    2,308.78x = 5,129,581.06
  5. Step 5: Solve for x
    x = 5,129,581.06/2,308.78
  6. Step 6: Final answer
    x = 2,221.77

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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.