Home / 1,178.73-1,625.27-1,055.79

Finding the Fourth Proportional to 1,178.73, 1,625.27 and 1,055.79

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Solution

The fourth proportional to 1,178.73, 1,625.27 and 1,055.79 is: 1,455.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178.73 : 1,625.27 = 1,055.79 : x
  2. Step 2: Convert to fraction form
    1,178.73/1,625.27 = 1,055.79/x
  3. Step 3: Cross multiply
    1,178.73x = 1,625.27 × 1,055.79
  4. Step 4: Simplify right side
    1,178.73x = 1,715,938.53
  5. Step 5: Solve for x
    x = 1,715,938.53/1,178.73
  6. Step 6: Final answer
    x = 1,455.75

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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.