Home / 1,489.34-2,234.40-1,059.20

Finding the Fourth Proportional to 1,489.34, 2,234.40 and 1,059.20

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Solution

The fourth proportional to 1,489.34, 2,234.40 and 1,059.20 is: 1,589.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,489.34 : 2,234.40 = 1,059.20 : x
  2. Step 2: Convert to fraction form
    1,489.34/2,234.40 = 1,059.20/x
  3. Step 3: Cross multiply
    1,489.34x = 2,234.40 × 1,059.20
  4. Step 4: Simplify right side
    1,489.34x = 2,366,676.48
  5. Step 5: Solve for x
    x = 2,366,676.48/1,489.34
  6. Step 6: Final answer
    x = 1,589.08

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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.