Home / 4,289-5,918.58-3,111.56

Finding the Fourth Proportional to 4,289, 5,918.58 and 3,111.56

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Solution

The fourth proportional to 4,289, 5,918.58 and 3,111.56 is: 4,293.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,289 : 5,918.58 = 3,111.56 : x
  2. Step 2: Convert to fraction form
    4,289/5,918.58 = 3,111.56/x
  3. Step 3: Cross multiply
    4,289x = 5,918.58 × 3,111.56
  4. Step 4: Simplify right side
    4,289x = 18,416,016.78
  5. Step 5: Solve for x
    x = 18,416,016.78/4,289
  6. Step 6: Final answer
    x = 4,293.78

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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.