Home / 2,099.16-3,147.48-1,125.72

Finding the Fourth Proportional to 2,099.16, 3,147.48 and 1,125.72

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Solution

The fourth proportional to 2,099.16, 3,147.48 and 1,125.72 is: 1,687.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,099.16 : 3,147.48 = 1,125.72 : x
  2. Step 2: Convert to fraction form
    2,099.16/3,147.48 = 1,125.72/x
  3. Step 3: Cross multiply
    2,099.16x = 3,147.48 × 1,125.72
  4. Step 4: Simplify right side
    2,099.16x = 3,543,181.19
  5. Step 5: Solve for x
    x = 3,543,181.19/2,099.16
  6. Step 6: Final answer
    x = 1,687.90

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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.