Home / 3,670.49-5,065.29-1,991.90

Finding the Fourth Proportional to 3,670.49, 5,065.29 and 1,991.90

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Solution

The fourth proportional to 3,670.49, 5,065.29 and 1,991.90 is: 2,748.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,670.49 : 5,065.29 = 1,991.90 : x
  2. Step 2: Convert to fraction form
    3,670.49/5,065.29 = 1,991.90/x
  3. Step 3: Cross multiply
    3,670.49x = 5,065.29 × 1,991.90
  4. Step 4: Simplify right side
    3,670.49x = 10,089,525.82
  5. Step 5: Solve for x
    x = 10,089,525.82/3,670.49
  6. Step 6: Final answer
    x = 2,748.83

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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.