Home / 1,306.44-1,790.01-1,289.07

Finding the Fourth Proportional to 1,306.44, 1,790.01 and 1,289.07

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Solution

The fourth proportional to 1,306.44, 1,790.01 and 1,289.07 is: 1,766.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,306.44 : 1,790.01 = 1,289.07 : x
  2. Step 2: Convert to fraction form
    1,306.44/1,790.01 = 1,289.07/x
  3. Step 3: Cross multiply
    1,306.44x = 1,790.01 × 1,289.07
  4. Step 4: Simplify right side
    1,306.44x = 2,307,448.19
  5. Step 5: Solve for x
    x = 2,307,448.19/1,306.44
  6. Step 6: Final answer
    x = 1,766.21

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.