Home / 7,118.46-10,678.91-3,171.15

Finding the Fourth Proportional to 7,118.46, 10,678.91 and 3,171.15

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Solution

The fourth proportional to 7,118.46, 10,678.91 and 3,171.15 is: 4,757.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,118.46 : 10,678.91 = 3,171.15 : x
  2. Step 2: Convert to fraction form
    7,118.46/10,678.91 = 3,171.15/x
  3. Step 3: Cross multiply
    7,118.46x = 10,678.91 × 3,171.15
  4. Step 4: Simplify right side
    7,118.46x = 33,864,409.59
  5. Step 5: Solve for x
    x = 33,864,409.59/7,118.46
  6. Step 6: Final answer
    x = 4,757.27

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1.5x scale

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.