Home / 1,986.32-2,741.14-1,102.12

Finding the Fourth Proportional to 1,986.32, 2,741.14 and 1,102.12

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Solution

The fourth proportional to 1,986.32, 2,741.14 and 1,102.12 is: 1,520.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986.32 : 2,741.14 = 1,102.12 : x
  2. Step 2: Convert to fraction form
    1,986.32/2,741.14 = 1,102.12/x
  3. Step 3: Cross multiply
    1,986.32x = 2,741.14 × 1,102.12
  4. Step 4: Simplify right side
    1,986.32x = 3,021,065.22
  5. Step 5: Solve for x
    x = 3,021,065.22/1,986.32
  6. Step 6: Final answer
    x = 1,520.94

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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.