Home / 3,894.94-5,374.99-2,126.55

Finding the Fourth Proportional to 3,894.94, 5,374.99 and 2,126.55

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Solution

The fourth proportional to 3,894.94, 5,374.99 and 2,126.55 is: 2,934.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,894.94 : 5,374.99 = 2,126.55 : x
  2. Step 2: Convert to fraction form
    3,894.94/5,374.99 = 2,126.55/x
  3. Step 3: Cross multiply
    3,894.94x = 5,374.99 × 2,126.55
  4. Step 4: Simplify right side
    3,894.94x = 11,430,184.98
  5. Step 5: Solve for x
    x = 11,430,184.98/3,894.94
  6. Step 6: Final answer
    x = 2,934.62

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1.5x scale

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.