Home / 7,685.93-11,529.21-3,985.79

Finding the Fourth Proportional to 7,685.93, 11,529.21 and 3,985.79

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Solution

The fourth proportional to 7,685.93, 11,529.21 and 3,985.79 is: 5,978.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,685.93 : 11,529.21 = 3,985.79 : x
  2. Step 2: Convert to fraction form
    7,685.93/11,529.21 = 3,985.79/x
  3. Step 3: Cross multiply
    7,685.93x = 11,529.21 × 3,985.79
  4. Step 4: Simplify right side
    7,685.93x = 45,952,952.28
  5. Step 5: Solve for x
    x = 45,952,952.28/7,685.93
  6. Step 6: Final answer
    x = 5,978.84

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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.