Home / 2,643.47-3,961.70-1,408.22

Finding the Fourth Proportional to 2,643.47, 3,961.70 and 1,408.22

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Solution

The fourth proportional to 2,643.47, 3,961.70 and 1,408.22 is: 2,110.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,643.47 : 3,961.70 = 1,408.22 : x
  2. Step 2: Convert to fraction form
    2,643.47/3,961.70 = 1,408.22/x
  3. Step 3: Cross multiply
    2,643.47x = 3,961.70 × 1,408.22
  4. Step 4: Simplify right side
    2,643.47x = 5,578,945.17
  5. Step 5: Solve for x
    x = 5,578,945.17/2,643.47
  6. Step 6: Final answer
    x = 2,110.46

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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.