Home / 2,176.70-3,003.93-1,245.20

Finding the Fourth Proportional to 2,176.70, 3,003.93 and 1,245.20

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Solution

The fourth proportional to 2,176.70, 3,003.93 and 1,245.20 is: 1,718.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,176.70 : 3,003.93 = 1,245.20 : x
  2. Step 2: Convert to fraction form
    2,176.70/3,003.93 = 1,245.20/x
  3. Step 3: Cross multiply
    2,176.70x = 3,003.93 × 1,245.20
  4. Step 4: Simplify right side
    2,176.70x = 3,740,478.62
  5. Step 5: Solve for x
    x = 3,740,478.62/2,176.70
  6. Step 6: Final answer
    x = 1,718.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.