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Finding the Fourth Proportional to 5,328.93, 7,986.44 and 2,860.86

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Solution

The fourth proportional to 5,328.93, 7,986.44 and 2,860.86 is: 4,287.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,328.93 : 7,986.44 = 2,860.86 : x
  2. Step 2: Convert to fraction form
    5,328.93/7,986.44 = 2,860.86/x
  3. Step 3: Cross multiply
    5,328.93x = 7,986.44 × 2,860.86
  4. Step 4: Simplify right side
    5,328.93x = 22,848,086.74
  5. Step 5: Solve for x
    x = 22,848,086.74/5,328.93
  6. Step 6: Final answer
    x = 4,287.56

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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.