Home / 3,410.81-5,114.85-1,218.80

Finding the Fourth Proportional to 3,410.81, 5,114.85 and 1,218.80

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Solution

The fourth proportional to 3,410.81, 5,114.85 and 1,218.80 is: 1,827.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,410.81 : 5,114.85 = 1,218.80 : x
  2. Step 2: Convert to fraction form
    3,410.81/5,114.85 = 1,218.80/x
  3. Step 3: Cross multiply
    3,410.81x = 5,114.85 × 1,218.80
  4. Step 4: Simplify right side
    3,410.81x = 6,233,958.63
  5. Step 5: Solve for x
    x = 6,233,958.63/3,410.81
  6. Step 6: Final answer
    x = 1,827.71

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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.