Home / 7,138.96-10,708.71-1,944.79

Finding the Fourth Proportional to 7,138.96, 10,708.71 and 1,944.79

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Solution

The fourth proportional to 7,138.96, 10,708.71 and 1,944.79 is: 2,917.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,138.96 : 10,708.71 = 1,944.79 : x
  2. Step 2: Convert to fraction form
    7,138.96/10,708.71 = 1,944.79/x
  3. Step 3: Cross multiply
    7,138.96x = 10,708.71 × 1,944.79
  4. Step 4: Simplify right side
    7,138.96x = 20,826,192.12
  5. Step 5: Solve for x
    x = 20,826,192.12/7,138.96
  6. Step 6: Final answer
    x = 2,917.26

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1.5x scale

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.