Home / 2,853.09-3,938.40-1,804.95

Finding the Fourth Proportional to 2,853.09, 3,938.40 and 1,804.95

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Solution

The fourth proportional to 2,853.09, 3,938.40 and 1,804.95 is: 2,491.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,853.09 : 3,938.40 = 1,804.95 : x
  2. Step 2: Convert to fraction form
    2,853.09/3,938.40 = 1,804.95/x
  3. Step 3: Cross multiply
    2,853.09x = 3,938.40 × 1,804.95
  4. Step 4: Simplify right side
    2,853.09x = 7,108,615.08
  5. Step 5: Solve for x
    x = 7,108,615.08/2,853.09
  6. Step 6: Final answer
    x = 2,491.55

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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.