Home / 3,015.36-4,161.26-1,689.06

Finding the Fourth Proportional to 3,015.36, 4,161.26 and 1,689.06

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Solution

The fourth proportional to 3,015.36, 4,161.26 and 1,689.06 is: 2,330.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,015.36 : 4,161.26 = 1,689.06 : x
  2. Step 2: Convert to fraction form
    3,015.36/4,161.26 = 1,689.06/x
  3. Step 3: Cross multiply
    3,015.36x = 4,161.26 × 1,689.06
  4. Step 4: Simplify right side
    3,015.36x = 7,028,609.37
  5. Step 5: Solve for x
    x = 7,028,609.37/3,015.36
  6. Step 6: Final answer
    x = 2,330.94

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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.