Home / 3,894.75-5,374.55-2,126.02

Finding the Fourth Proportional to 3,894.75, 5,374.55 and 2,126.02

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Solution

The fourth proportional to 3,894.75, 5,374.55 and 2,126.02 is: 2,933.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,894.75 : 5,374.55 = 2,126.02 : x
  2. Step 2: Convert to fraction form
    3,894.75/5,374.55 = 2,126.02/x
  3. Step 3: Cross multiply
    3,894.75x = 5,374.55 × 2,126.02
  4. Step 4: Simplify right side
    3,894.75x = 11,426,400.79
  5. Step 5: Solve for x
    x = 11,426,400.79/3,894.75
  6. Step 6: Final answer
    x = 2,933.80

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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.