Home / 3,431.99-5,148.43-1,240.42

Finding the Fourth Proportional to 3,431.99, 5,148.43 and 1,240.42

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Solution

The fourth proportional to 3,431.99, 5,148.43 and 1,240.42 is: 1,860.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,431.99 : 5,148.43 = 1,240.42 : x
  2. Step 2: Convert to fraction form
    3,431.99/5,148.43 = 1,240.42/x
  3. Step 3: Cross multiply
    3,431.99x = 5,148.43 × 1,240.42
  4. Step 4: Simplify right side
    3,431.99x = 6,386,215.54
  5. Step 5: Solve for x
    x = 6,386,215.54/3,431.99
  6. Step 6: Final answer
    x = 1,860.79

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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.