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Finding the Fourth Proportional to 5,208.44, 7,809.01 and 1,920.65

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Solution

The fourth proportional to 5,208.44, 7,809.01 and 1,920.65 is: 2,879.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,208.44 : 7,809.01 = 1,920.65 : x
  2. Step 2: Convert to fraction form
    5,208.44/7,809.01 = 1,920.65/x
  3. Step 3: Cross multiply
    5,208.44x = 7,809.01 × 1,920.65
  4. Step 4: Simplify right side
    5,208.44x = 14,998,331.21
  5. Step 5: Solve for x
    x = 14,998,331.21/5,208.44
  6. Step 6: Final answer
    x = 2,879.62

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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.