Home / 3,074.74-4,239.96-2,178.07

Finding the Fourth Proportional to 3,074.74, 4,239.96 and 2,178.07

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Solution

The fourth proportional to 3,074.74, 4,239.96 and 2,178.07 is: 3,003.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,074.74 : 4,239.96 = 2,178.07 : x
  2. Step 2: Convert to fraction form
    3,074.74/4,239.96 = 2,178.07/x
  3. Step 3: Cross multiply
    3,074.74x = 4,239.96 × 2,178.07
  4. Step 4: Simplify right side
    3,074.74x = 9,234,929.68
  5. Step 5: Solve for x
    x = 9,234,929.68/3,074.74
  6. Step 6: Final answer
    x = 3,003.48

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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.