Home / 5,237.21-7,857.32-3,047.78

Finding the Fourth Proportional to 5,237.21, 7,857.32 and 3,047.78

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Solution

The fourth proportional to 5,237.21, 7,857.32 and 3,047.78 is: 4,572.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,237.21 : 7,857.32 = 3,047.78 : x
  2. Step 2: Convert to fraction form
    5,237.21/7,857.32 = 3,047.78/x
  3. Step 3: Cross multiply
    5,237.21x = 7,857.32 × 3,047.78
  4. Step 4: Simplify right side
    5,237.21x = 23,947,328.22
  5. Step 5: Solve for x
    x = 23,947,328.22/5,237.21
  6. Step 6: Final answer
    x = 4,572.54

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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.