Home / 3,187.09-4,782.84-1,239.31

Finding the Fourth Proportional to 3,187.09, 4,782.84 and 1,239.31

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Solution

The fourth proportional to 3,187.09, 4,782.84 and 1,239.31 is: 1,859.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.09 : 4,782.84 = 1,239.31 : x
  2. Step 2: Convert to fraction form
    3,187.09/4,782.84 = 1,239.31/x
  3. Step 3: Cross multiply
    3,187.09x = 4,782.84 × 1,239.31
  4. Step 4: Simplify right side
    3,187.09x = 5,927,421.44
  5. Step 5: Solve for x
    x = 5,927,421.44/3,187.09
  6. Step 6: Final answer
    x = 1,859.82

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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.