Home / 3,947.58-5,916.51-3,218.58

Finding the Fourth Proportional to 3,947.58, 5,916.51 and 3,218.58

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Solution

The fourth proportional to 3,947.58, 5,916.51 and 3,218.58 is: 4,823.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,947.58 : 5,916.51 = 3,218.58 : x
  2. Step 2: Convert to fraction form
    3,947.58/5,916.51 = 3,218.58/x
  3. Step 3: Cross multiply
    3,947.58x = 5,916.51 × 3,218.58
  4. Step 4: Simplify right side
    3,947.58x = 19,042,760.76
  5. Step 5: Solve for x
    x = 19,042,760.76/3,947.58
  6. Step 6: Final answer
    x = 4,823.91

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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.