Home / 6,453.45-9,671.67-4,989.78

Finding the Fourth Proportional to 6,453.45, 9,671.67 and 4,989.78

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Solution

The fourth proportional to 6,453.45, 9,671.67 and 4,989.78 is: 7,478.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,453.45 : 9,671.67 = 4,989.78 : x
  2. Step 2: Convert to fraction form
    6,453.45/9,671.67 = 4,989.78/x
  3. Step 3: Cross multiply
    6,453.45x = 9,671.67 × 4,989.78
  4. Step 4: Simplify right side
    6,453.45x = 48,259,505.53
  5. Step 5: Solve for x
    x = 48,259,505.53/6,453.45
  6. Step 6: Final answer
    x = 7,478.09

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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.