Home / 2,890.94-4,339.38-1,781.15

Finding the Fourth Proportional to 2,890.94, 4,339.38 and 1,781.15

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Solution

The fourth proportional to 2,890.94, 4,339.38 and 1,781.15 is: 2,673.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,890.94 : 4,339.38 = 1,781.15 : x
  2. Step 2: Convert to fraction form
    2,890.94/4,339.38 = 1,781.15/x
  3. Step 3: Cross multiply
    2,890.94x = 4,339.38 × 1,781.15
  4. Step 4: Simplify right side
    2,890.94x = 7,729,064.99
  5. Step 5: Solve for x
    x = 7,729,064.99/2,890.94
  6. Step 6: Final answer
    x = 2,673.55

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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.