Home / 1,984.20-2,738.00-1,187.76

Finding the Fourth Proportional to 1,984.20, 2,738.00 and 1,187.76

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Solution

The fourth proportional to 1,984.20, 2,738.00 and 1,187.76 is: 1,639.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,984.20 : 2,738.00 = 1,187.76 : x
  2. Step 2: Convert to fraction form
    1,984.20/2,738.00 = 1,187.76/x
  3. Step 3: Cross multiply
    1,984.20x = 2,738.00 × 1,187.76
  4. Step 4: Simplify right side
    1,984.20x = 3,252,100.12
  5. Step 5: Solve for x
    x = 3,252,100.12/1,984.20
  6. Step 6: Final answer
    x = 1,639.00

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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.