Home / 1,890.74-2,608.49-1,394.57

Finding the Fourth Proportional to 1,890.74, 2,608.49 and 1,394.57

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Solution

The fourth proportional to 1,890.74, 2,608.49 and 1,394.57 is: 1,923.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,890.74 : 2,608.49 = 1,394.57 : x
  2. Step 2: Convert to fraction form
    1,890.74/2,608.49 = 1,394.57/x
  3. Step 3: Cross multiply
    1,890.74x = 2,608.49 × 1,394.57
  4. Step 4: Simplify right side
    1,890.74x = 3,637,701.88
  5. Step 5: Solve for x
    x = 3,637,701.88/1,890.74
  6. Step 6: Final answer
    x = 1,923.96

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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.