Home / 3,918.51-5,878.73-1,945.06

Finding the Fourth Proportional to 3,918.51, 5,878.73 and 1,945.06

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Solution

The fourth proportional to 3,918.51, 5,878.73 and 1,945.06 is: 2,918.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.51 : 5,878.73 = 1,945.06 : x
  2. Step 2: Convert to fraction form
    3,918.51/5,878.73 = 1,945.06/x
  3. Step 3: Cross multiply
    3,918.51x = 5,878.73 × 1,945.06
  4. Step 4: Simplify right side
    3,918.51x = 11,434,482.57
  5. Step 5: Solve for x
    x = 11,434,482.57/3,918.51
  6. Step 6: Final answer
    x = 2,918.07

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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.