Home / 7,789.18-11,668.64-6,916.54

Finding the Fourth Proportional to 7,789.18, 11,668.64 and 6,916.54

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Solution

The fourth proportional to 7,789.18, 11,668.64 and 6,916.54 is: 10,361.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,789.18 : 11,668.64 = 6,916.54 : x
  2. Step 2: Convert to fraction form
    7,789.18/11,668.64 = 6,916.54/x
  3. Step 3: Cross multiply
    7,789.18x = 11,668.64 × 6,916.54
  4. Step 4: Simplify right side
    7,789.18x = 80,706,615.31
  5. Step 5: Solve for x
    x = 80,706,615.31/7,789.18
  6. Step 6: Final answer
    x = 10,361.38

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1.5x scale

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.