Home / 1,984.36-2,738.80-1,145.61

Finding the Fourth Proportional to 1,984.36, 2,738.80 and 1,145.61

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Solution

The fourth proportional to 1,984.36, 2,738.80 and 1,145.61 is: 1,581.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,984.36 : 2,738.80 = 1,145.61 : x
  2. Step 2: Convert to fraction form
    1,984.36/2,738.80 = 1,145.61/x
  3. Step 3: Cross multiply
    1,984.36x = 2,738.80 × 1,145.61
  4. Step 4: Simplify right side
    1,984.36x = 3,137,596.67
  5. Step 5: Solve for x
    x = 3,137,596.67/1,984.36
  6. Step 6: Final answer
    x = 1,581.16

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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.