Home / 2,310.87-3,189.54-1,316.67

Finding the Fourth Proportional to 2,310.87, 3,189.54 and 1,316.67

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Solution

The fourth proportional to 2,310.87, 3,189.54 and 1,316.67 is: 1,817.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,310.87 : 3,189.54 = 1,316.67 : x
  2. Step 2: Convert to fraction form
    2,310.87/3,189.54 = 1,316.67/x
  3. Step 3: Cross multiply
    2,310.87x = 3,189.54 × 1,316.67
  4. Step 4: Simplify right side
    2,310.87x = 4,199,571.63
  5. Step 5: Solve for x
    x = 4,199,571.63/2,310.87
  6. Step 6: Final answer
    x = 1,817.31

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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.