Home / 5,109.36-7,666.20-2,189.04

Finding the Fourth Proportional to 5,109.36, 7,666.20 and 2,189.04

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Solution

The fourth proportional to 5,109.36, 7,666.20 and 2,189.04 is: 3,284.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,109.36 : 7,666.20 = 2,189.04 : x
  2. Step 2: Convert to fraction form
    5,109.36/7,666.20 = 2,189.04/x
  3. Step 3: Cross multiply
    5,109.36x = 7,666.20 × 2,189.04
  4. Step 4: Simplify right side
    5,109.36x = 16,781,618.45
  5. Step 5: Solve for x
    x = 16,781,618.45/5,109.36
  6. Step 6: Final answer
    x = 3,284.49

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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.