Home / 2,149.35-3,218.54-1,416.70

Finding the Fourth Proportional to 2,149.35, 3,218.54 and 1,416.70

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Solution

The fourth proportional to 2,149.35, 3,218.54 and 1,416.70 is: 2,121.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,149.35 : 3,218.54 = 1,416.70 : x
  2. Step 2: Convert to fraction form
    2,149.35/3,218.54 = 1,416.70/x
  3. Step 3: Cross multiply
    2,149.35x = 3,218.54 × 1,416.70
  4. Step 4: Simplify right side
    2,149.35x = 4,559,705.62
  5. Step 5: Solve for x
    x = 4,559,705.62/2,149.35
  6. Step 6: Final answer
    x = 2,121.44

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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.