Home / 5,128.22-7,692.53-2,661.45

Finding the Fourth Proportional to 5,128.22, 7,692.53 and 2,661.45

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Solution

The fourth proportional to 5,128.22, 7,692.53 and 2,661.45 is: 3,992.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,128.22 : 7,692.53 = 2,661.45 : x
  2. Step 2: Convert to fraction form
    5,128.22/7,692.53 = 2,661.45/x
  3. Step 3: Cross multiply
    5,128.22x = 7,692.53 × 2,661.45
  4. Step 4: Simplify right side
    5,128.22x = 20,473,270.66
  5. Step 5: Solve for x
    x = 20,473,270.66/5,128.22
  6. Step 6: Final answer
    x = 3,992.28

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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.