Home / 7,346.05-10,137.72-3,989

Finding the Fourth Proportional to 7,346.05, 10,137.72 and 3,989

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Solution

The fourth proportional to 7,346.05, 10,137.72 and 3,989 is: 5,504.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,346.05 : 10,137.72 = 3,989 : x
  2. Step 2: Convert to fraction form
    7,346.05/10,137.72 = 3,989/x
  3. Step 3: Cross multiply
    7,346.05x = 10,137.72 × 3,989
  4. Step 4: Simplify right side
    7,346.05x = 40,439,365.08
  5. Step 5: Solve for x
    x = 40,439,365.08/7,346.05
  6. Step 6: Final answer
    x = 5,504.91

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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.