Home / 4,989.29-7,465.37-3,131.70

Finding the Fourth Proportional to 4,989.29, 7,465.37 and 3,131.70

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Solution

The fourth proportional to 4,989.29, 7,465.37 and 3,131.70 is: 4,685.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,989.29 : 7,465.37 = 3,131.70 : x
  2. Step 2: Convert to fraction form
    4,989.29/7,465.37 = 3,131.70/x
  3. Step 3: Cross multiply
    4,989.29x = 7,465.37 × 3,131.70
  4. Step 4: Simplify right side
    4,989.29x = 23,379,283.57
  5. Step 5: Solve for x
    x = 23,379,283.57/4,989.29
  6. Step 6: Final answer
    x = 4,685.90

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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.