Home / 1,986.91-2,741.93-1,090.67

Finding the Fourth Proportional to 1,986.91, 2,741.93 and 1,090.67

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Solution

The fourth proportional to 1,986.91, 2,741.93 and 1,090.67 is: 1,505.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986.91 : 2,741.93 = 1,090.67 : x
  2. Step 2: Convert to fraction form
    1,986.91/2,741.93 = 1,090.67/x
  3. Step 3: Cross multiply
    1,986.91x = 2,741.93 × 1,090.67
  4. Step 4: Simplify right side
    1,986.91x = 2,990,533.94
  5. Step 5: Solve for x
    x = 2,990,533.94/1,986.91
  6. Step 6: Final answer
    x = 1,505.12

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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.