Home / 1,260.07-1,890.79-610.80

Finding the Fourth Proportional to 1,260.07, 1,890.79 and 610.80

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Solution

The fourth proportional to 1,260.07, 1,890.79 and 610.80 is: 916.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260.07 : 1,890.79 = 610.80 : x
  2. Step 2: Convert to fraction form
    1,260.07/1,890.79 = 610.80/x
  3. Step 3: Cross multiply
    1,260.07x = 1,890.79 × 610.80
  4. Step 4: Simplify right side
    1,260.07x = 1,154,902.73
  5. Step 5: Solve for x
    x = 1,154,902.73/1,260.07
  6. Step 6: Final answer
    x = 916.54

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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.