Home / 6,916.83-10,376.78-1,986.09

Finding the Fourth Proportional to 6,916.83, 10,376.78 and 1,986.09

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Solution

The fourth proportional to 6,916.83, 10,376.78 and 1,986.09 is: 2,979.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,916.83 : 10,376.78 = 1,986.09 : x
  2. Step 2: Convert to fraction form
    6,916.83/10,376.78 = 1,986.09/x
  3. Step 3: Cross multiply
    6,916.83x = 10,376.78 × 1,986.09
  4. Step 4: Simplify right side
    6,916.83x = 20,609,209.06
  5. Step 5: Solve for x
    x = 20,609,209.06/6,916.83
  6. Step 6: Final answer
    x = 2,979.57

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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.