Home / 7,459.09-11,187.79-1,912.48

Finding the Fourth Proportional to 7,459.09, 11,187.79 and 1,912.48

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Solution

The fourth proportional to 7,459.09, 11,187.79 and 1,912.48 is: 2,868.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,459.09 : 11,187.79 = 1,912.48 : x
  2. Step 2: Convert to fraction form
    7,459.09/11,187.79 = 1,912.48/x
  3. Step 3: Cross multiply
    7,459.09x = 11,187.79 × 1,912.48
  4. Step 4: Simplify right side
    7,459.09x = 21,396,424.62
  5. Step 5: Solve for x
    x = 21,396,424.62/7,459.09
  6. Step 6: Final answer
    x = 2,868.50

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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.