Home / 4,478.28-6,717.42-2,138.34

Finding the Fourth Proportional to 4,478.28, 6,717.42 and 2,138.34

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Solution

The fourth proportional to 4,478.28, 6,717.42 and 2,138.34 is: 3,207.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,478.28 : 6,717.42 = 2,138.34 : x
  2. Step 2: Convert to fraction form
    4,478.28/6,717.42 = 2,138.34/x
  3. Step 3: Cross multiply
    4,478.28x = 6,717.42 × 2,138.34
  4. Step 4: Simplify right side
    4,478.28x = 14,364,127.88
  5. Step 5: Solve for x
    x = 14,364,127.88/4,478.28
  6. Step 6: Final answer
    x = 3,207.51

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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.