Home / 3,918.49-5,407.89-2,240.03

Finding the Fourth Proportional to 3,918.49, 5,407.89 and 2,240.03

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Solution

The fourth proportional to 3,918.49, 5,407.89 and 2,240.03 is: 3,091.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.49 : 5,407.89 = 2,240.03 : x
  2. Step 2: Convert to fraction form
    3,918.49/5,407.89 = 2,240.03/x
  3. Step 3: Cross multiply
    3,918.49x = 5,407.89 × 2,240.03
  4. Step 4: Simplify right side
    3,918.49x = 12,113,835.84
  5. Step 5: Solve for x
    x = 12,113,835.84/3,918.49
  6. Step 6: Final answer
    x = 3,091.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.