Home / 1,867.22-2,577.66-1,280.78

Finding the Fourth Proportional to 1,867.22, 2,577.66 and 1,280.78

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Solution

The fourth proportional to 1,867.22, 2,577.66 and 1,280.78 is: 1,768.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,867.22 : 2,577.66 = 1,280.78 : x
  2. Step 2: Convert to fraction form
    1,867.22/2,577.66 = 1,280.78/x
  3. Step 3: Cross multiply
    1,867.22x = 2,577.66 × 1,280.78
  4. Step 4: Simplify right side
    1,867.22x = 3,301,415.37
  5. Step 5: Solve for x
    x = 3,301,415.37/1,867.22
  6. Step 6: Final answer
    x = 1,768.09

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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.