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Finding the Fourth Proportional to 6,925.65, 9,558 and 3,940.85

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Solution

The fourth proportional to 6,925.65, 9,558 and 3,940.85 is: 5,438.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,925.65 : 9,558 = 3,940.85 : x
  2. Step 2: Convert to fraction form
    6,925.65/9,558 = 3,940.85/x
  3. Step 3: Cross multiply
    6,925.65x = 9,558 × 3,940.85
  4. Step 4: Simplify right side
    6,925.65x = 37,666,596.51
  5. Step 5: Solve for x
    x = 37,666,596.51/6,925.65
  6. Step 6: Final answer
    x = 5,438.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.