Home / 3,113.62-4,670.55-1,239.86

Finding the Fourth Proportional to 3,113.62, 4,670.55 and 1,239.86

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Solution

The fourth proportional to 3,113.62, 4,670.55 and 1,239.86 is: 1,859.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,113.62 : 4,670.55 = 1,239.86 : x
  2. Step 2: Convert to fraction form
    3,113.62/4,670.55 = 1,239.86/x
  3. Step 3: Cross multiply
    3,113.62x = 4,670.55 × 1,239.86
  4. Step 4: Simplify right side
    3,113.62x = 5,790,839.80
  5. Step 5: Solve for x
    x = 5,790,839.80/3,113.62
  6. Step 6: Final answer
    x = 1,859.84

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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.