Home / 1,986.04-2,976.54-1,120.84

Finding the Fourth Proportional to 1,986.04, 2,976.54 and 1,120.84

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Solution

The fourth proportional to 1,986.04, 2,976.54 and 1,120.84 is: 1,679.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986.04 : 2,976.54 = 1,120.84 : x
  2. Step 2: Convert to fraction form
    1,986.04/2,976.54 = 1,120.84/x
  3. Step 3: Cross multiply
    1,986.04x = 2,976.54 × 1,120.84
  4. Step 4: Simplify right side
    1,986.04x = 3,336,225.09
  5. Step 5: Solve for x
    x = 3,336,225.09/1,986.04
  6. Step 6: Final answer
    x = 1,679.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.