Home / 5,218.91-7,823.42-1,929.77

Finding the Fourth Proportional to 5,218.91, 7,823.42 and 1,929.77

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Solution

The fourth proportional to 5,218.91, 7,823.42 and 1,929.77 is: 2,892.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,218.91 : 7,823.42 = 1,929.77 : x
  2. Step 2: Convert to fraction form
    5,218.91/7,823.42 = 1,929.77/x
  3. Step 3: Cross multiply
    5,218.91x = 7,823.42 × 1,929.77
  4. Step 4: Simplify right side
    5,218.91x = 15,097,391.56
  5. Step 5: Solve for x
    x = 15,097,391.56/5,218.91
  6. Step 6: Final answer
    x = 2,892.82

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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.