Home / 3,879.86-5,354.28-2,307.94

Finding the Fourth Proportional to 3,879.86, 5,354.28 and 2,307.94

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Solution

The fourth proportional to 3,879.86, 5,354.28 and 2,307.94 is: 3,185.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,879.86 : 5,354.28 = 2,307.94 : x
  2. Step 2: Convert to fraction form
    3,879.86/5,354.28 = 2,307.94/x
  3. Step 3: Cross multiply
    3,879.86x = 5,354.28 × 2,307.94
  4. Step 4: Simplify right side
    3,879.86x = 12,357,356.98
  5. Step 5: Solve for x
    x = 12,357,356.98/3,879.86
  6. Step 6: Final answer
    x = 3,185.00

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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.