Home / 3,015.56-4,161.29-1,689.05

Finding the Fourth Proportional to 3,015.56, 4,161.29 and 1,689.05

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Solution

The fourth proportional to 3,015.56, 4,161.29 and 1,689.05 is: 2,330.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,015.56 : 4,161.29 = 1,689.05 : x
  2. Step 2: Convert to fraction form
    3,015.56/4,161.29 = 1,689.05/x
  3. Step 3: Cross multiply
    3,015.56x = 4,161.29 × 1,689.05
  4. Step 4: Simplify right side
    3,015.56x = 7,028,597.62
  5. Step 5: Solve for x
    x = 7,028,597.62/3,015.56
  6. Step 6: Final answer
    x = 2,330.78

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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.