Home / 4,099.80-6,149.22-1,138.47

Finding the Fourth Proportional to 4,099.80, 6,149.22 and 1,138.47

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Solution

The fourth proportional to 4,099.80, 6,149.22 and 1,138.47 is: 1,707.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,099.80 : 6,149.22 = 1,138.47 : x
  2. Step 2: Convert to fraction form
    4,099.80/6,149.22 = 1,138.47/x
  3. Step 3: Cross multiply
    4,099.80x = 6,149.22 × 1,138.47
  4. Step 4: Simplify right side
    4,099.80x = 7,000,702.49
  5. Step 5: Solve for x
    x = 7,000,702.49/4,099.80
  6. Step 6: Final answer
    x = 1,707.57

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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.