Home / 3,850.51-5,311.02-2,278.57

Finding the Fourth Proportional to 3,850.51, 5,311.02 and 2,278.57

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Solution

The fourth proportional to 3,850.51, 5,311.02 and 2,278.57 is: 3,142.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,850.51 : 5,311.02 = 2,278.57 : x
  2. Step 2: Convert to fraction form
    3,850.51/5,311.02 = 2,278.57/x
  3. Step 3: Cross multiply
    3,850.51x = 5,311.02 × 2,278.57
  4. Step 4: Simplify right side
    3,850.51x = 12,101,530.84
  5. Step 5: Solve for x
    x = 12,101,530.84/3,850.51
  6. Step 6: Final answer
    x = 3,142.84

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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.