Home / 3,121.08-4,679.12-1,803.33

Finding the Fourth Proportional to 3,121.08, 4,679.12 and 1,803.33

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Solution

The fourth proportional to 3,121.08, 4,679.12 and 1,803.33 is: 2,703.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121.08 : 4,679.12 = 1,803.33 : x
  2. Step 2: Convert to fraction form
    3,121.08/4,679.12 = 1,803.33/x
  3. Step 3: Cross multiply
    3,121.08x = 4,679.12 × 1,803.33
  4. Step 4: Simplify right side
    3,121.08x = 8,437,988.45
  5. Step 5: Solve for x
    x = 8,437,988.45/3,121.08
  6. Step 6: Final answer
    x = 2,703.55

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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.