Home / 2,790.89-3,850.63-1,796.74

Finding the Fourth Proportional to 2,790.89, 3,850.63 and 1,796.74

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Solution

The fourth proportional to 2,790.89, 3,850.63 and 1,796.74 is: 2,478.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790.89 : 3,850.63 = 1,796.74 : x
  2. Step 2: Convert to fraction form
    2,790.89/3,850.63 = 1,796.74/x
  3. Step 3: Cross multiply
    2,790.89x = 3,850.63 × 1,796.74
  4. Step 4: Simplify right side
    2,790.89x = 6,918,590.29
  5. Step 5: Solve for x
    x = 6,918,590.29/2,790.89
  6. Step 6: Final answer
    x = 2,478.99

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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.