Home / 7,190.37-10,783.43-3,678.21

Finding the Fourth Proportional to 7,190.37, 10,783.43 and 3,678.21

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Solution

The fourth proportional to 7,190.37, 10,783.43 and 3,678.21 is: 5,516.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,190.37 : 10,783.43 = 3,678.21 : x
  2. Step 2: Convert to fraction form
    7,190.37/10,783.43 = 3,678.21/x
  3. Step 3: Cross multiply
    7,190.37x = 10,783.43 × 3,678.21
  4. Step 4: Simplify right side
    7,190.37x = 39,663,715.46
  5. Step 5: Solve for x
    x = 39,663,715.46/7,190.37
  6. Step 6: Final answer
    x = 5,516.23

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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.