Home / 3,916.36-5,877.78-2,939.32

Finding the Fourth Proportional to 3,916.36, 5,877.78 and 2,939.32

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Solution

The fourth proportional to 3,916.36, 5,877.78 and 2,939.32 is: 4,411.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,916.36 : 5,877.78 = 2,939.32 : x
  2. Step 2: Convert to fraction form
    3,916.36/5,877.78 = 2,939.32/x
  3. Step 3: Cross multiply
    3,916.36x = 5,877.78 × 2,939.32
  4. Step 4: Simplify right side
    3,916.36x = 17,276,676.31
  5. Step 5: Solve for x
    x = 17,276,676.31/3,916.36
  6. Step 6: Final answer
    x = 4,411.41

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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.