Home / 7,816.78-11,725.40-3,072.74

Finding the Fourth Proportional to 7,816.78, 11,725.40 and 3,072.74

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Solution

The fourth proportional to 7,816.78, 11,725.40 and 3,072.74 is: 4,609.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,816.78 : 11,725.40 = 3,072.74 : x
  2. Step 2: Convert to fraction form
    7,816.78/11,725.40 = 3,072.74/x
  3. Step 3: Cross multiply
    7,816.78x = 11,725.40 × 3,072.74
  4. Step 4: Simplify right side
    7,816.78x = 36,029,105.60
  5. Step 5: Solve for x
    x = 36,029,105.60/7,816.78
  6. Step 6: Final answer
    x = 4,609.20

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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.