Home / 2,311.17-3,189.55-1,316.54

Finding the Fourth Proportional to 2,311.17, 3,189.55 and 1,316.54

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Solution

The fourth proportional to 2,311.17, 3,189.55 and 1,316.54 is: 1,816.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,311.17 : 3,189.55 = 1,316.54 : x
  2. Step 2: Convert to fraction form
    2,311.17/3,189.55 = 1,316.54/x
  3. Step 3: Cross multiply
    2,311.17x = 3,189.55 × 1,316.54
  4. Step 4: Simplify right side
    2,311.17x = 4,199,163.07
  5. Step 5: Solve for x
    x = 4,199,163.07/2,311.17
  6. Step 6: Final answer
    x = 1,816.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.