Home / 1,395.79-2,091.33-984.19

Finding the Fourth Proportional to 1,395.79, 2,091.33 and 984.19

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Solution

The fourth proportional to 1,395.79, 2,091.33 and 984.19 is: 1,474.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,395.79 : 2,091.33 = 984.19 : x
  2. Step 2: Convert to fraction form
    1,395.79/2,091.33 = 984.19/x
  3. Step 3: Cross multiply
    1,395.79x = 2,091.33 × 984.19
  4. Step 4: Simplify right side
    1,395.79x = 2,058,266.07
  5. Step 5: Solve for x
    x = 2,058,266.07/1,395.79
  6. Step 6: Final answer
    x = 1,474.62

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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.