Home / 3,311.25-4,965.86-1,119.47

Finding the Fourth Proportional to 3,311.25, 4,965.86 and 1,119.47

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Solution

The fourth proportional to 3,311.25, 4,965.86 and 1,119.47 is: 1,678.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,311.25 : 4,965.86 = 1,119.47 : x
  2. Step 2: Convert to fraction form
    3,311.25/4,965.86 = 1,119.47/x
  3. Step 3: Cross multiply
    3,311.25x = 4,965.86 × 1,119.47
  4. Step 4: Simplify right side
    3,311.25x = 5,559,130.90
  5. Step 5: Solve for x
    x = 5,559,130.90/3,311.25
  6. Step 6: Final answer
    x = 1,678.86

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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.