Home / 3,916.74-5,405.05-2,148.41

Finding the Fourth Proportional to 3,916.74, 5,405.05 and 2,148.41

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Solution

The fourth proportional to 3,916.74, 5,405.05 and 2,148.41 is: 2,964.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,916.74 : 5,405.05 = 2,148.41 : x
  2. Step 2: Convert to fraction form
    3,916.74/5,405.05 = 2,148.41/x
  3. Step 3: Cross multiply
    3,916.74x = 5,405.05 × 2,148.41
  4. Step 4: Simplify right side
    3,916.74x = 11,612,267.58
  5. Step 5: Solve for x
    x = 11,612,267.58/3,916.74
  6. Step 6: Final answer
    x = 2,964.78

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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.