Home / 3,518.85-5,278.29-1,961.22

Finding the Fourth Proportional to 3,518.85, 5,278.29 and 1,961.22

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Solution

The fourth proportional to 3,518.85, 5,278.29 and 1,961.22 is: 2,941.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,518.85 : 5,278.29 = 1,961.22 : x
  2. Step 2: Convert to fraction form
    3,518.85/5,278.29 = 1,961.22/x
  3. Step 3: Cross multiply
    3,518.85x = 5,278.29 × 1,961.22
  4. Step 4: Simplify right side
    3,518.85x = 10,351,887.91
  5. Step 5: Solve for x
    x = 10,351,887.91/3,518.85
  6. Step 6: Final answer
    x = 2,941.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.