Home / 3,079.96-4,249.32-1,821.07

Finding the Fourth Proportional to 3,079.96, 4,249.32 and 1,821.07

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Solution

The fourth proportional to 3,079.96, 4,249.32 and 1,821.07 is: 2,512.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,079.96 : 4,249.32 = 1,821.07 : x
  2. Step 2: Convert to fraction form
    3,079.96/4,249.32 = 1,821.07/x
  3. Step 3: Cross multiply
    3,079.96x = 4,249.32 × 1,821.07
  4. Step 4: Simplify right side
    3,079.96x = 7,738,309.17
  5. Step 5: Solve for x
    x = 7,738,309.17/3,079.96
  6. Step 6: Final answer
    x = 2,512.47

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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.