Home / 3,918.07-5,406.26-2,591.06

Finding the Fourth Proportional to 3,918.07, 5,406.26 and 2,591.06

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Solution

The fourth proportional to 3,918.07, 5,406.26 and 2,591.06 is: 3,575.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.07 : 5,406.26 = 2,591.06 : x
  2. Step 2: Convert to fraction form
    3,918.07/5,406.26 = 2,591.06/x
  3. Step 3: Cross multiply
    3,918.07x = 5,406.26 × 2,591.06
  4. Step 4: Simplify right side
    3,918.07x = 14,007,944.04
  5. Step 5: Solve for x
    x = 14,007,944.04/3,918.07
  6. Step 6: Final answer
    x = 3,575.22

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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.