Home / 5,382.05-7,427.79-3,144.65

Finding the Fourth Proportional to 5,382.05, 7,427.79 and 3,144.65

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Solution

The fourth proportional to 5,382.05, 7,427.79 and 3,144.65 is: 4,339.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,382.05 : 7,427.79 = 3,144.65 : x
  2. Step 2: Convert to fraction form
    5,382.05/7,427.79 = 3,144.65/x
  3. Step 3: Cross multiply
    5,382.05x = 7,427.79 × 3,144.65
  4. Step 4: Simplify right side
    5,382.05x = 23,357,762.68
  5. Step 5: Solve for x
    x = 23,357,762.68/5,382.05
  6. Step 6: Final answer
    x = 4,339.94

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1.5x scale

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.