Home / 6,916.78-10,376.97-1,986.82

Finding the Fourth Proportional to 6,916.78, 10,376.97 and 1,986.82

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Solution

The fourth proportional to 6,916.78, 10,376.97 and 1,986.82 is: 2,980.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,916.78 : 10,376.97 = 1,986.82 : x
  2. Step 2: Convert to fraction form
    6,916.78/10,376.97 = 1,986.82/x
  3. Step 3: Cross multiply
    6,916.78x = 10,376.97 × 1,986.82
  4. Step 4: Simplify right side
    6,916.78x = 20,617,171.54
  5. Step 5: Solve for x
    x = 20,617,171.54/6,916.78
  6. Step 6: Final answer
    x = 2,980.75

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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.