Home / 7,128.15-10,692.27-3,842.79

Finding the Fourth Proportional to 7,128.15, 10,692.27 and 3,842.79

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Solution

The fourth proportional to 7,128.15, 10,692.27 and 3,842.79 is: 5,764.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128.15 : 10,692.27 = 3,842.79 : x
  2. Step 2: Convert to fraction form
    7,128.15/10,692.27 = 3,842.79/x
  3. Step 3: Cross multiply
    7,128.15x = 10,692.27 × 3,842.79
  4. Step 4: Simplify right side
    7,128.15x = 41,088,148.23
  5. Step 5: Solve for x
    x = 41,088,148.23/7,128.15
  6. Step 6: Final answer
    x = 5,764.21

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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.