Home / 2,311.37-3,188.36-1,316.46

Finding the Fourth Proportional to 2,311.37, 3,188.36 and 1,316.46

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Solution

The fourth proportional to 2,311.37, 3,188.36 and 1,316.46 is: 1,815.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,311.37 : 3,188.36 = 1,316.46 : x
  2. Step 2: Convert to fraction form
    2,311.37/3,188.36 = 1,316.46/x
  3. Step 3: Cross multiply
    2,311.37x = 3,188.36 × 1,316.46
  4. Step 4: Simplify right side
    2,311.37x = 4,197,354.69
  5. Step 5: Solve for x
    x = 4,197,354.69/2,311.37
  6. Step 6: Final answer
    x = 1,815.96

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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.