Home / 1,187.31-1,771.80-1,043.33

Finding the Fourth Proportional to 1,187.31, 1,771.80 and 1,043.33

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Solution

The fourth proportional to 1,187.31, 1,771.80 and 1,043.33 is: 1,556.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187.31 : 1,771.80 = 1,043.33 : x
  2. Step 2: Convert to fraction form
    1,187.31/1,771.80 = 1,043.33/x
  3. Step 3: Cross multiply
    1,187.31x = 1,771.80 × 1,043.33
  4. Step 4: Simplify right side
    1,187.31x = 1,848,563.24
  5. Step 5: Solve for x
    x = 1,848,563.24/1,187.31
  6. Step 6: Final answer
    x = 1,556.93

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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.