Home / 3,015.31-4,161.11-1,689.03

Finding the Fourth Proportional to 3,015.31, 4,161.11 and 1,689.03

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Solution

The fourth proportional to 3,015.31, 4,161.11 and 1,689.03 is: 2,330.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,015.31 : 4,161.11 = 1,689.03 : x
  2. Step 2: Convert to fraction form
    3,015.31/4,161.11 = 1,689.03/x
  3. Step 3: Cross multiply
    3,015.31x = 4,161.11 × 1,689.03
  4. Step 4: Simplify right side
    3,015.31x = 7,028,210.37
  5. Step 5: Solve for x
    x = 7,028,210.37/3,015.31
  6. Step 6: Final answer
    x = 2,330.84

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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.