Home / 5,115.28-7,674.33-1,828.72

Finding the Fourth Proportional to 5,115.28, 7,674.33 and 1,828.72

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Solution

The fourth proportional to 5,115.28, 7,674.33 and 1,828.72 is: 2,743.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115.28 : 7,674.33 = 1,828.72 : x
  2. Step 2: Convert to fraction form
    5,115.28/7,674.33 = 1,828.72/x
  3. Step 3: Cross multiply
    5,115.28x = 7,674.33 × 1,828.72
  4. Step 4: Simplify right side
    5,115.28x = 14,034,200.76
  5. Step 5: Solve for x
    x = 14,034,200.76/5,115.28
  6. Step 6: Final answer
    x = 2,743.58

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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.