Home / 3,416.40-5,124.60-1,107.90

Finding the Fourth Proportional to 3,416.40, 5,124.60 and 1,107.90

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Solution

The fourth proportional to 3,416.40, 5,124.60 and 1,107.90 is: 1,661.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,416.40 : 5,124.60 = 1,107.90 : x
  2. Step 2: Convert to fraction form
    3,416.40/5,124.60 = 1,107.90/x
  3. Step 3: Cross multiply
    3,416.40x = 5,124.60 × 1,107.90
  4. Step 4: Simplify right side
    3,416.40x = 5,677,544.34
  5. Step 5: Solve for x
    x = 5,677,544.34/3,416.40
  6. Step 6: Final answer
    x = 1,661.85

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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.