Home / 3,878.55-5,343.34-2,697.57

Finding the Fourth Proportional to 3,878.55, 5,343.34 and 2,697.57

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Solution

The fourth proportional to 3,878.55, 5,343.34 and 2,697.57 is: 3,716.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,878.55 : 5,343.34 = 2,697.57 : x
  2. Step 2: Convert to fraction form
    3,878.55/5,343.34 = 2,697.57/x
  3. Step 3: Cross multiply
    3,878.55x = 5,343.34 × 2,697.57
  4. Step 4: Simplify right side
    3,878.55x = 14,414,033.68
  5. Step 5: Solve for x
    x = 14,414,033.68/3,878.55
  6. Step 6: Final answer
    x = 3,716.35

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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.