Home / 4,989.39-7,477.47-3,815.12

Finding the Fourth Proportional to 4,989.39, 7,477.47 and 3,815.12

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Solution

The fourth proportional to 4,989.39, 7,477.47 and 3,815.12 is: 5,717.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,989.39 : 7,477.47 = 3,815.12 : x
  2. Step 2: Convert to fraction form
    4,989.39/7,477.47 = 3,815.12/x
  3. Step 3: Cross multiply
    4,989.39x = 7,477.47 × 3,815.12
  4. Step 4: Simplify right side
    4,989.39x = 28,527,407.96
  5. Step 5: Solve for x
    x = 28,527,407.96/4,989.39
  6. Step 6: Final answer
    x = 5,717.61

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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.