Home / 3,980.37-5,493.96-2,487.45

Finding the Fourth Proportional to 3,980.37, 5,493.96 and 2,487.45

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Solution

The fourth proportional to 3,980.37, 5,493.96 and 2,487.45 is: 3,433.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,980.37 : 5,493.96 = 2,487.45 : x
  2. Step 2: Convert to fraction form
    3,980.37/5,493.96 = 2,487.45/x
  3. Step 3: Cross multiply
    3,980.37x = 5,493.96 × 2,487.45
  4. Step 4: Simplify right side
    3,980.37x = 13,665,950.80
  5. Step 5: Solve for x
    x = 13,665,950.80/3,980.37
  6. Step 6: Final answer
    x = 3,433.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.