Home / 1,260.44-1,890.57-609.20

Finding the Fourth Proportional to 1,260.44, 1,890.57 and 609.20

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Solution

The fourth proportional to 1,260.44, 1,890.57 and 609.20 is: 913.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260.44 : 1,890.57 = 609.20 : x
  2. Step 2: Convert to fraction form
    1,260.44/1,890.57 = 609.20/x
  3. Step 3: Cross multiply
    1,260.44x = 1,890.57 × 609.20
  4. Step 4: Simplify right side
    1,260.44x = 1,151,735.24
  5. Step 5: Solve for x
    x = 1,151,735.24/1,260.44
  6. Step 6: Final answer
    x = 913.76

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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.