Home / 1,249.21-1,882.24-1,116.55

Finding the Fourth Proportional to 1,249.21, 1,882.24 and 1,116.55

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Solution

The fourth proportional to 1,249.21, 1,882.24 and 1,116.55 is: 1,682.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,249.21 : 1,882.24 = 1,116.55 : x
  2. Step 2: Convert to fraction form
    1,249.21/1,882.24 = 1,116.55/x
  3. Step 3: Cross multiply
    1,249.21x = 1,882.24 × 1,116.55
  4. Step 4: Simplify right side
    1,249.21x = 2,101,615.07
  5. Step 5: Solve for x
    x = 2,101,615.07/1,249.21
  6. Step 6: Final answer
    x = 1,682.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.