Home / 3,323.75-4,987.79-1,271.75

Finding the Fourth Proportional to 3,323.75, 4,987.79 and 1,271.75

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Solution

The fourth proportional to 3,323.75, 4,987.79 and 1,271.75 is: 1,908.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,323.75 : 4,987.79 = 1,271.75 : x
  2. Step 2: Convert to fraction form
    3,323.75/4,987.79 = 1,271.75/x
  3. Step 3: Cross multiply
    3,323.75x = 4,987.79 × 1,271.75
  4. Step 4: Simplify right side
    3,323.75x = 6,343,221.93
  5. Step 5: Solve for x
    x = 6,343,221.93/3,323.75
  6. Step 6: Final answer
    x = 1,908.45

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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.