Home / 3,918.25-5,877.78-1,579.06

Finding the Fourth Proportional to 3,918.25, 5,877.78 and 1,579.06

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Solution

The fourth proportional to 3,918.25, 5,877.78 and 1,579.06 is: 2,368.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.25 : 5,877.78 = 1,579.06 : x
  2. Step 2: Convert to fraction form
    3,918.25/5,877.78 = 1,579.06/x
  3. Step 3: Cross multiply
    3,918.25x = 5,877.78 × 1,579.06
  4. Step 4: Simplify right side
    3,918.25x = 9,281,367.29
  5. Step 5: Solve for x
    x = 9,281,367.29/3,918.25
  6. Step 6: Final answer
    x = 2,368.75

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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.