Home / 3,147.49-4,721.87-1,762.80

Finding the Fourth Proportional to 3,147.49, 4,721.87 and 1,762.80

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Solution

The fourth proportional to 3,147.49, 4,721.87 and 1,762.80 is: 2,644.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,147.49 : 4,721.87 = 1,762.80 : x
  2. Step 2: Convert to fraction form
    3,147.49/4,721.87 = 1,762.80/x
  3. Step 3: Cross multiply
    3,147.49x = 4,721.87 × 1,762.80
  4. Step 4: Simplify right side
    3,147.49x = 8,323,712.44
  5. Step 5: Solve for x
    x = 8,323,712.44/3,147.49
  6. Step 6: Final answer
    x = 2,644.56

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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.