Home / 3,916.58-5,404.88-2,148.20

Finding the Fourth Proportional to 3,916.58, 5,404.88 and 2,148.20

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Solution

The fourth proportional to 3,916.58, 5,404.88 and 2,148.20 is: 2,964.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,916.58 : 5,404.88 = 2,148.20 : x
  2. Step 2: Convert to fraction form
    3,916.58/5,404.88 = 2,148.20/x
  3. Step 3: Cross multiply
    3,916.58x = 5,404.88 × 2,148.20
  4. Step 4: Simplify right side
    3,916.58x = 11,610,725.45
  5. Step 5: Solve for x
    x = 11,610,725.45/3,916.58
  6. Step 6: Final answer
    x = 2,964.51

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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.