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Finding the Fourth Proportional to 3,898.48, 5,377.44 and 2,719.12

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Solution

The fourth proportional to 3,898.48, 5,377.44 and 2,719.12 is: 3,750.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,898.48 : 5,377.44 = 2,719.12 : x
  2. Step 2: Convert to fraction form
    3,898.48/5,377.44 = 2,719.12/x
  3. Step 3: Cross multiply
    3,898.48x = 5,377.44 × 2,719.12
  4. Step 4: Simplify right side
    3,898.48x = 14,621,904.65
  5. Step 5: Solve for x
    x = 14,621,904.65/3,898.48
  6. Step 6: Final answer
    x = 3,750.67

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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.