Home / 3,416.28-5,124.36-1,107.78

Finding the Fourth Proportional to 3,416.28, 5,124.36 and 1,107.78

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Solution

The fourth proportional to 3,416.28, 5,124.36 and 1,107.78 is: 1,661.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,416.28 : 5,124.36 = 1,107.78 : x
  2. Step 2: Convert to fraction form
    3,416.28/5,124.36 = 1,107.78/x
  3. Step 3: Cross multiply
    3,416.28x = 5,124.36 × 1,107.78
  4. Step 4: Simplify right side
    3,416.28x = 5,676,663.52
  5. Step 5: Solve for x
    x = 5,676,663.52/3,416.28
  6. Step 6: Final answer
    x = 1,661.65

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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.