Home / 3,431.05-5,148.09-1,240.11

Finding the Fourth Proportional to 3,431.05, 5,148.09 and 1,240.11

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Solution

The fourth proportional to 3,431.05, 5,148.09 and 1,240.11 is: 1,860.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,431.05 : 5,148.09 = 1,240.11 : x
  2. Step 2: Convert to fraction form
    3,431.05/5,148.09 = 1,240.11/x
  3. Step 3: Cross multiply
    3,431.05x = 5,148.09 × 1,240.11
  4. Step 4: Simplify right side
    3,431.05x = 6,384,197.89
  5. Step 5: Solve for x
    x = 6,384,197.89/3,431.05
  6. Step 6: Final answer
    x = 1,860.71

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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.