Home / 3,051.48-4,211.64-1,990.56

Finding the Fourth Proportional to 3,051.48, 4,211.64 and 1,990.56

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Solution

The fourth proportional to 3,051.48, 4,211.64 and 1,990.56 is: 2,747.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,051.48 : 4,211.64 = 1,990.56 : x
  2. Step 2: Convert to fraction form
    3,051.48/4,211.64 = 1,990.56/x
  3. Step 3: Cross multiply
    3,051.48x = 4,211.64 × 1,990.56
  4. Step 4: Simplify right side
    3,051.48x = 8,383,522.12
  5. Step 5: Solve for x
    x = 8,383,522.12/3,051.48
  6. Step 6: Final answer
    x = 2,747.36

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1.5x scale

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.