Home / 5,153.94-7,112.79-3,138.12

Finding the Fourth Proportional to 5,153.94, 7,112.79 and 3,138.12

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Solution

The fourth proportional to 5,153.94, 7,112.79 and 3,138.12 is: 4,330.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,153.94 : 7,112.79 = 3,138.12 : x
  2. Step 2: Convert to fraction form
    5,153.94/7,112.79 = 3,138.12/x
  3. Step 3: Cross multiply
    5,153.94x = 7,112.79 × 3,138.12
  4. Step 4: Simplify right side
    5,153.94x = 22,320,788.55
  5. Step 5: Solve for x
    x = 22,320,788.55/5,153.94
  6. Step 6: Final answer
    x = 4,330.82

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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.