Home / 7,453-11,178.15-2,772.28

Finding the Fourth Proportional to 7,453, 11,178.15 and 2,772.28

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Solution

The fourth proportional to 7,453, 11,178.15 and 2,772.28 is: 4,157.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,453 : 11,178.15 = 2,772.28 : x
  2. Step 2: Convert to fraction form
    7,453/11,178.15 = 2,772.28/x
  3. Step 3: Cross multiply
    7,453x = 11,178.15 × 2,772.28
  4. Step 4: Simplify right side
    7,453x = 30,988,961.68
  5. Step 5: Solve for x
    x = 30,988,961.68/7,453
  6. Step 6: Final answer
    x = 4,157.92

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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.