Home / 6,478.21-9,719.39-2,315.39

Finding the Fourth Proportional to 6,478.21, 9,719.39 and 2,315.39

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Solution

The fourth proportional to 6,478.21, 9,719.39 and 2,315.39 is: 3,473.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,478.21 : 9,719.39 = 2,315.39 : x
  2. Step 2: Convert to fraction form
    6,478.21/9,719.39 = 2,315.39/x
  3. Step 3: Cross multiply
    6,478.21x = 9,719.39 × 2,315.39
  4. Step 4: Simplify right side
    6,478.21x = 22,504,166.84
  5. Step 5: Solve for x
    x = 22,504,166.84/6,478.21
  6. Step 6: Final answer
    x = 3,473.83

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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.