Home / 5,128.40-7,692.06-2,206.28

Finding the Fourth Proportional to 5,128.40, 7,692.06 and 2,206.28

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Solution

The fourth proportional to 5,128.40, 7,692.06 and 2,206.28 is: 3,309.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,128.40 : 7,692.06 = 2,206.28 : x
  2. Step 2: Convert to fraction form
    5,128.40/7,692.06 = 2,206.28/x
  3. Step 3: Cross multiply
    5,128.40x = 7,692.06 × 2,206.28
  4. Step 4: Simplify right side
    5,128.40x = 16,970,838.14
  5. Step 5: Solve for x
    x = 16,970,838.14/5,128.40
  6. Step 6: Final answer
    x = 3,309.19

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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.