Home / 8,020.59-11,071.46-7,179.78

Finding the Fourth Proportional to 8,020.59, 11,071.46 and 7,179.78

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Solution

The fourth proportional to 8,020.59, 11,071.46 and 7,179.78 is: 9,910.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,020.59 : 11,071.46 = 7,179.78 : x
  2. Step 2: Convert to fraction form
    8,020.59/11,071.46 = 7,179.78/x
  3. Step 3: Cross multiply
    8,020.59x = 11,071.46 × 7,179.78
  4. Step 4: Simplify right side
    8,020.59x = 79,490,608.51
  5. Step 5: Solve for x
    x = 79,490,608.51/8,020.59
  6. Step 6: Final answer
    x = 9,910.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.