Home / 2,991.24-4,485.40-910.68

Finding the Fourth Proportional to 2,991.24, 4,485.40 and 910.68

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Solution

The fourth proportional to 2,991.24, 4,485.40 and 910.68 is: 1,365.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,991.24 : 4,485.40 = 910.68 : x
  2. Step 2: Convert to fraction form
    2,991.24/4,485.40 = 910.68/x
  3. Step 3: Cross multiply
    2,991.24x = 4,485.40 × 910.68
  4. Step 4: Simplify right side
    2,991.24x = 4,084,764.07
  5. Step 5: Solve for x
    x = 4,084,764.07/2,991.24
  6. Step 6: Final answer
    x = 1,365.58

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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.