Home / 3,918.54-5,407.07-2,240.06

Finding the Fourth Proportional to 3,918.54, 5,407.07 and 2,240.06

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Solution

The fourth proportional to 3,918.54, 5,407.07 and 2,240.06 is: 3,090.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.54 : 5,407.07 = 2,240.06 : x
  2. Step 2: Convert to fraction form
    3,918.54/5,407.07 = 2,240.06/x
  3. Step 3: Cross multiply
    3,918.54x = 5,407.07 × 2,240.06
  4. Step 4: Simplify right side
    3,918.54x = 12,112,135.59
  5. Step 5: Solve for x
    x = 12,112,135.59/3,918.54
  6. Step 6: Final answer
    x = 3,090.99

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1.5x scale

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.