Home / 3,916.35-5,870.34-1,939.95

Finding the Fourth Proportional to 3,916.35, 5,870.34 and 1,939.95

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Solution

The fourth proportional to 3,916.35, 5,870.34 and 1,939.95 is: 2,907.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,916.35 : 5,870.34 = 1,939.95 : x
  2. Step 2: Convert to fraction form
    3,916.35/5,870.34 = 1,939.95/x
  3. Step 3: Cross multiply
    3,916.35x = 5,870.34 × 1,939.95
  4. Step 4: Simplify right side
    3,916.35x = 11,388,166.08
  5. Step 5: Solve for x
    x = 11,388,166.08/3,916.35
  6. Step 6: Final answer
    x = 2,907.85

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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.