Home / 1,986.46-2,741.09-1,102.05

Finding the Fourth Proportional to 1,986.46, 2,741.09 and 1,102.05

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Solution

The fourth proportional to 1,986.46, 2,741.09 and 1,102.05 is: 1,520.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986.46 : 2,741.09 = 1,102.05 : x
  2. Step 2: Convert to fraction form
    1,986.46/2,741.09 = 1,102.05/x
  3. Step 3: Cross multiply
    1,986.46x = 2,741.09 × 1,102.05
  4. Step 4: Simplify right side
    1,986.46x = 3,020,812.72
  5. Step 5: Solve for x
    x = 3,020,812.72/1,986.46
  6. Step 6: Final answer
    x = 1,520.70

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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.