Home / 7,346.45-10,137.96-3,989.21

Finding the Fourth Proportional to 7,346.45, 10,137.96 and 3,989.21

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Solution

The fourth proportional to 7,346.45, 10,137.96 and 3,989.21 is: 5,505.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,346.45 : 10,137.96 = 3,989.21 : x
  2. Step 2: Convert to fraction form
    7,346.45/10,137.96 = 3,989.21/x
  3. Step 3: Cross multiply
    7,346.45x = 10,137.96 × 3,989.21
  4. Step 4: Simplify right side
    7,346.45x = 40,442,400.72
  5. Step 5: Solve for x
    x = 40,442,400.72/7,346.45
  6. Step 6: Final answer
    x = 5,505.03

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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.