Home / 3,943.36-5,905.32-2,478.88

Finding the Fourth Proportional to 3,943.36, 5,905.32 and 2,478.88

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Solution

The fourth proportional to 3,943.36, 5,905.32 and 2,478.88 is: 3,712.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,943.36 : 5,905.32 = 2,478.88 : x
  2. Step 2: Convert to fraction form
    3,943.36/5,905.32 = 2,478.88/x
  3. Step 3: Cross multiply
    3,943.36x = 5,905.32 × 2,478.88
  4. Step 4: Simplify right side
    3,943.36x = 14,638,579.64
  5. Step 5: Solve for x
    x = 14,638,579.64/3,943.36
  6. Step 6: Final answer
    x = 3,712.21

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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.