Home / 2,580.89-3,865.97-1,260.65

Finding the Fourth Proportional to 2,580.89, 3,865.97 and 1,260.65

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Solution

The fourth proportional to 2,580.89, 3,865.97 and 1,260.65 is: 1,888.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,580.89 : 3,865.97 = 1,260.65 : x
  2. Step 2: Convert to fraction form
    2,580.89/3,865.97 = 1,260.65/x
  3. Step 3: Cross multiply
    2,580.89x = 3,865.97 × 1,260.65
  4. Step 4: Simplify right side
    2,580.89x = 4,873,647.90
  5. Step 5: Solve for x
    x = 4,873,647.90/2,580.89
  6. Step 6: Final answer
    x = 1,888.36

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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.