Home / 3,829.86-5,284.79-2,151.45

Finding the Fourth Proportional to 3,829.86, 5,284.79 and 2,151.45

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Solution

The fourth proportional to 3,829.86, 5,284.79 and 2,151.45 is: 2,968.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,829.86 : 5,284.79 = 2,151.45 : x
  2. Step 2: Convert to fraction form
    3,829.86/5,284.79 = 2,151.45/x
  3. Step 3: Cross multiply
    3,829.86x = 5,284.79 × 2,151.45
  4. Step 4: Simplify right side
    3,829.86x = 11,369,958.76
  5. Step 5: Solve for x
    x = 11,369,958.76/3,829.86
  6. Step 6: Final answer
    x = 2,968.77

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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.