Home / 2,576.89-3,865.92-1,116.28

Finding the Fourth Proportional to 2,576.89, 3,865.92 and 1,116.28

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Solution

The fourth proportional to 2,576.89, 3,865.92 and 1,116.28 is: 1,674.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,576.89 : 3,865.92 = 1,116.28 : x
  2. Step 2: Convert to fraction form
    2,576.89/3,865.92 = 1,116.28/x
  3. Step 3: Cross multiply
    2,576.89x = 3,865.92 × 1,116.28
  4. Step 4: Simplify right side
    2,576.89x = 4,315,449.18
  5. Step 5: Solve for x
    x = 4,315,449.18/2,576.89
  6. Step 6: Final answer
    x = 1,674.67

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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.