Home / 1,389.96-2,083.73-1,185.84

Finding the Fourth Proportional to 1,389.96, 2,083.73 and 1,185.84

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Solution

The fourth proportional to 1,389.96, 2,083.73 and 1,185.84 is: 1,777.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389.96 : 2,083.73 = 1,185.84 : x
  2. Step 2: Convert to fraction form
    1,389.96/2,083.73 = 1,185.84/x
  3. Step 3: Cross multiply
    1,389.96x = 2,083.73 × 1,185.84
  4. Step 4: Simplify right side
    1,389.96x = 2,470,964.45
  5. Step 5: Solve for x
    x = 2,470,964.45/1,389.96
  6. Step 6: Final answer
    x = 1,777.72

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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.