Home / 1,867.19-2,577.79-1,238.57

Finding the Fourth Proportional to 1,867.19, 2,577.79 and 1,238.57

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Solution

The fourth proportional to 1,867.19, 2,577.79 and 1,238.57 is: 1,709.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,867.19 : 2,577.79 = 1,238.57 : x
  2. Step 2: Convert to fraction form
    1,867.19/2,577.79 = 1,238.57/x
  3. Step 3: Cross multiply
    1,867.19x = 2,577.79 × 1,238.57
  4. Step 4: Simplify right side
    1,867.19x = 3,192,775.21
  5. Step 5: Solve for x
    x = 3,192,775.21/1,867.19
  6. Step 6: Final answer
    x = 1,709.94

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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.