Home / 2,189.40-3,289.28-1,410.88

Finding the Fourth Proportional to 2,189.40, 3,289.28 and 1,410.88

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Solution

The fourth proportional to 2,189.40, 3,289.28 and 1,410.88 is: 2,119.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,189.40 : 3,289.28 = 1,410.88 : x
  2. Step 2: Convert to fraction form
    2,189.40/3,289.28 = 1,410.88/x
  3. Step 3: Cross multiply
    2,189.40x = 3,289.28 × 1,410.88
  4. Step 4: Simplify right side
    2,189.40x = 4,640,779.37
  5. Step 5: Solve for x
    x = 4,640,779.37/2,189.40
  6. Step 6: Final answer
    x = 2,119.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.