Home / 3,916.68-5,405.36-2,148.63

Finding the Fourth Proportional to 3,916.68, 5,405.36 and 2,148.63

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Solution

The fourth proportional to 3,916.68, 5,405.36 and 2,148.63 is: 2,965.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,916.68 : 5,405.36 = 2,148.63 : x
  2. Step 2: Convert to fraction form
    3,916.68/5,405.36 = 2,148.63/x
  3. Step 3: Cross multiply
    3,916.68x = 5,405.36 × 2,148.63
  4. Step 4: Simplify right side
    3,916.68x = 11,614,091.63
  5. Step 5: Solve for x
    x = 11,614,091.63/3,916.68
  6. Step 6: Final answer
    x = 2,965.29

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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.