Home / 3,936.40-5,430-2,363.60

Finding the Fourth Proportional to 3,936.40, 5,430 and 2,363.60

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Solution

The fourth proportional to 3,936.40, 5,430 and 2,363.60 is: 3,260.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,936.40 : 5,430 = 2,363.60 : x
  2. Step 2: Convert to fraction form
    3,936.40/5,430 = 2,363.60/x
  3. Step 3: Cross multiply
    3,936.40x = 5,430 × 2,363.60
  4. Step 4: Simplify right side
    3,936.40x = 12,834,348
  5. Step 5: Solve for x
    x = 12,834,348/3,936.40
  6. Step 6: Final answer
    x = 3,260.43

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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.