Home / 1,981.86-2,735.81-1,195.75

Finding the Fourth Proportional to 1,981.86, 2,735.81 and 1,195.75

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Solution

The fourth proportional to 1,981.86, 2,735.81 and 1,195.75 is: 1,650.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,981.86 : 2,735.81 = 1,195.75 : x
  2. Step 2: Convert to fraction form
    1,981.86/2,735.81 = 1,195.75/x
  3. Step 3: Cross multiply
    1,981.86x = 2,735.81 × 1,195.75
  4. Step 4: Simplify right side
    1,981.86x = 3,271,344.81
  5. Step 5: Solve for x
    x = 3,271,344.81/1,981.86
  6. Step 6: Final answer
    x = 1,650.64

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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.