Home / 1,177.58-1,768.80-1,112.24

Finding the Fourth Proportional to 1,177.58, 1,768.80 and 1,112.24

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Solution

The fourth proportional to 1,177.58, 1,768.80 and 1,112.24 is: 1,670.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,177.58 : 1,768.80 = 1,112.24 : x
  2. Step 2: Convert to fraction form
    1,177.58/1,768.80 = 1,112.24/x
  3. Step 3: Cross multiply
    1,177.58x = 1,768.80 × 1,112.24
  4. Step 4: Simplify right side
    1,177.58x = 1,967,330.11
  5. Step 5: Solve for x
    x = 1,967,330.11/1,177.58
  6. Step 6: Final answer
    x = 1,670.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.