Home / 7,346.70-10,138.52-3,989.54

Finding the Fourth Proportional to 7,346.70, 10,138.52 and 3,989.54

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Solution

The fourth proportional to 7,346.70, 10,138.52 and 3,989.54 is: 5,505.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,346.70 : 10,138.52 = 3,989.54 : x
  2. Step 2: Convert to fraction form
    7,346.70/10,138.52 = 3,989.54/x
  3. Step 3: Cross multiply
    7,346.70x = 10,138.52 × 3,989.54
  4. Step 4: Simplify right side
    7,346.70x = 40,448,074.09
  5. Step 5: Solve for x
    x = 40,448,074.09/7,346.70
  6. Step 6: Final answer
    x = 5,505.61

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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.