Home / 7,706.20-11,564.70-4,939.60

Finding the Fourth Proportional to 7,706.20, 11,564.70 and 4,939.60

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Solution

The fourth proportional to 7,706.20, 11,564.70 and 4,939.60 is: 7,412.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,706.20 : 11,564.70 = 4,939.60 : x
  2. Step 2: Convert to fraction form
    7,706.20/11,564.70 = 4,939.60/x
  3. Step 3: Cross multiply
    7,706.20x = 11,564.70 × 4,939.60
  4. Step 4: Simplify right side
    7,706.20x = 57,124,992.12
  5. Step 5: Solve for x
    x = 57,124,992.12/7,706.20
  6. Step 6: Final answer
    x = 7,412.86

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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.