Home / 2,858.09-3,943.28-1,863

Finding the Fourth Proportional to 2,858.09, 3,943.28 and 1,863

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Solution

The fourth proportional to 2,858.09, 3,943.28 and 1,863 is: 2,570.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,858.09 : 3,943.28 = 1,863 : x
  2. Step 2: Convert to fraction form
    2,858.09/3,943.28 = 1,863/x
  3. Step 3: Cross multiply
    2,858.09x = 3,943.28 × 1,863
  4. Step 4: Simplify right side
    2,858.09x = 7,346,335.30
  5. Step 5: Solve for x
    x = 7,346,335.30/2,858.09
  6. Step 6: Final answer
    x = 2,570.37

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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.