Home / 1,589.20-2,189.15-1,511.44

Finding the Fourth Proportional to 1,589.20, 2,189.15 and 1,511.44

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Solution

The fourth proportional to 1,589.20, 2,189.15 and 1,511.44 is: 2,082.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,589.20 : 2,189.15 = 1,511.44 : x
  2. Step 2: Convert to fraction form
    1,589.20/2,189.15 = 1,511.44/x
  3. Step 3: Cross multiply
    1,589.20x = 2,189.15 × 1,511.44
  4. Step 4: Simplify right side
    1,589.20x = 3,308,768.88
  5. Step 5: Solve for x
    x = 3,308,768.88/1,589.20
  6. Step 6: Final answer
    x = 2,082.03

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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.