Home / 2,189.08-3,281.46-1,408.96

Finding the Fourth Proportional to 2,189.08, 3,281.46 and 1,408.96

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Solution

The fourth proportional to 2,189.08, 3,281.46 and 1,408.96 is: 2,112.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,189.08 : 3,281.46 = 1,408.96 : x
  2. Step 2: Convert to fraction form
    2,189.08/3,281.46 = 1,408.96/x
  3. Step 3: Cross multiply
    2,189.08x = 3,281.46 × 1,408.96
  4. Step 4: Simplify right side
    2,189.08x = 4,623,445.88
  5. Step 5: Solve for x
    x = 4,623,445.88/2,189.08
  6. Step 6: Final answer
    x = 2,112.05

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1.5x scale

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.