Home / 1,217.06-1,825.60-1,119.86

Finding the Fourth Proportional to 1,217.06, 1,825.60 and 1,119.86

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Solution

The fourth proportional to 1,217.06, 1,825.60 and 1,119.86 is: 1,679.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217.06 : 1,825.60 = 1,119.86 : x
  2. Step 2: Convert to fraction form
    1,217.06/1,825.60 = 1,119.86/x
  3. Step 3: Cross multiply
    1,217.06x = 1,825.60 × 1,119.86
  4. Step 4: Simplify right side
    1,217.06x = 2,044,416.42
  5. Step 5: Solve for x
    x = 2,044,416.42/1,217.06
  6. Step 6: Final answer
    x = 1,679.80

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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.