Home / 7,119.77-10,679.82-2,189.45

Finding the Fourth Proportional to 7,119.77, 10,679.82 and 2,189.45

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Solution

The fourth proportional to 7,119.77, 10,679.82 and 2,189.45 is: 3,284.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,119.77 : 10,679.82 = 2,189.45 : x
  2. Step 2: Convert to fraction form
    7,119.77/10,679.82 = 2,189.45/x
  3. Step 3: Cross multiply
    7,119.77x = 10,679.82 × 2,189.45
  4. Step 4: Simplify right side
    7,119.77x = 23,382,878.50
  5. Step 5: Solve for x
    x = 23,382,878.50/7,119.77
  6. Step 6: Final answer
    x = 3,284.22

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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.