Home / 5,128.26-7,692.38-1,665.50

Finding the Fourth Proportional to 5,128.26, 7,692.38 and 1,665.50

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Solution

The fourth proportional to 5,128.26, 7,692.38 and 1,665.50 is: 2,498.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,128.26 : 7,692.38 = 1,665.50 : x
  2. Step 2: Convert to fraction form
    5,128.26/7,692.38 = 1,665.50/x
  3. Step 3: Cross multiply
    5,128.26x = 7,692.38 × 1,665.50
  4. Step 4: Simplify right side
    5,128.26x = 12,811,658.89
  5. Step 5: Solve for x
    x = 12,811,658.89/5,128.26
  6. Step 6: Final answer
    x = 2,498.25

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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.