Home / 7,980.23-11,971.89-2,715.03

Finding the Fourth Proportional to 7,980.23, 11,971.89 and 2,715.03

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Solution

The fourth proportional to 7,980.23, 11,971.89 and 2,715.03 is: 4,073.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,980.23 : 11,971.89 = 2,715.03 : x
  2. Step 2: Convert to fraction form
    7,980.23/11,971.89 = 2,715.03/x
  3. Step 3: Cross multiply
    7,980.23x = 11,971.89 × 2,715.03
  4. Step 4: Simplify right side
    7,980.23x = 32,504,053.52
  5. Step 5: Solve for x
    x = 32,504,053.52/7,980.23
  6. Step 6: Final answer
    x = 4,073.07

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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.