Home / 1,314.36-1,960.77-1,278.61

Finding the Fourth Proportional to 1,314.36, 1,960.77 and 1,278.61

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Solution

The fourth proportional to 1,314.36, 1,960.77 and 1,278.61 is: 1,907.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,314.36 : 1,960.77 = 1,278.61 : x
  2. Step 2: Convert to fraction form
    1,314.36/1,960.77 = 1,278.61/x
  3. Step 3: Cross multiply
    1,314.36x = 1,960.77 × 1,278.61
  4. Step 4: Simplify right side
    1,314.36x = 2,507,043.93
  5. Step 5: Solve for x
    x = 2,507,043.93/1,314.36
  6. Step 6: Final answer
    x = 1,907.43

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.