Home / 7,890.37-11,836.68-2,623.65

Finding the Fourth Proportional to 7,890.37, 11,836.68 and 2,623.65

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Solution

The fourth proportional to 7,890.37, 11,836.68 and 2,623.65 is: 3,935.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,890.37 : 11,836.68 = 2,623.65 : x
  2. Step 2: Convert to fraction form
    7,890.37/11,836.68 = 2,623.65/x
  3. Step 3: Cross multiply
    7,890.37x = 11,836.68 × 2,623.65
  4. Step 4: Simplify right side
    7,890.37x = 31,055,305.48
  5. Step 5: Solve for x
    x = 31,055,305.48/7,890.37
  6. Step 6: Final answer
    x = 3,935.85

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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.