Home / 2,515.63-3,768.54-1,647.31

Finding the Fourth Proportional to 2,515.63, 3,768.54 and 1,647.31

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Solution

The fourth proportional to 2,515.63, 3,768.54 and 1,647.31 is: 2,467.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,515.63 : 3,768.54 = 1,647.31 : x
  2. Step 2: Convert to fraction form
    2,515.63/3,768.54 = 1,647.31/x
  3. Step 3: Cross multiply
    2,515.63x = 3,768.54 × 1,647.31
  4. Step 4: Simplify right side
    2,515.63x = 6,207,963.05
  5. Step 5: Solve for x
    x = 6,207,963.05/2,515.63
  6. Step 6: Final answer
    x = 2,467.75

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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.