Home / 7,689.42-11,536.92-3,989.16

Finding the Fourth Proportional to 7,689.42, 11,536.92 and 3,989.16

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Solution

The fourth proportional to 7,689.42, 11,536.92 and 3,989.16 is: 5,985.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,689.42 : 11,536.92 = 3,989.16 : x
  2. Step 2: Convert to fraction form
    7,689.42/11,536.92 = 3,989.16/x
  3. Step 3: Cross multiply
    7,689.42x = 11,536.92 × 3,989.16
  4. Step 4: Simplify right side
    7,689.42x = 46,022,619.79
  5. Step 5: Solve for x
    x = 46,022,619.79/7,689.42
  6. Step 6: Final answer
    x = 5,985.19

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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.