Home / 8,228.76-12,336.96-2,678.78

Finding the Fourth Proportional to 8,228.76, 12,336.96 and 2,678.78

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Solution

The fourth proportional to 8,228.76, 12,336.96 and 2,678.78 is: 4,016.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,228.76 : 12,336.96 = 2,678.78 : x
  2. Step 2: Convert to fraction form
    8,228.76/12,336.96 = 2,678.78/x
  3. Step 3: Cross multiply
    8,228.76x = 12,336.96 × 2,678.78
  4. Step 4: Simplify right side
    8,228.76x = 33,048,001.71
  5. Step 5: Solve for x
    x = 33,048,001.71/8,228.76
  6. Step 6: Final answer
    x = 4,016.16

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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.