Home / 7,945.21-11,903.28-3,720.71

Finding the Fourth Proportional to 7,945.21, 11,903.28 and 3,720.71

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Solution

The fourth proportional to 7,945.21, 11,903.28 and 3,720.71 is: 5,574.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,945.21 : 11,903.28 = 3,720.71 : x
  2. Step 2: Convert to fraction form
    7,945.21/11,903.28 = 3,720.71/x
  3. Step 3: Cross multiply
    7,945.21x = 11,903.28 × 3,720.71
  4. Step 4: Simplify right side
    7,945.21x = 44,288,645.72
  5. Step 5: Solve for x
    x = 44,288,645.72/7,945.21
  6. Step 6: Final answer
    x = 5,574.26

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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.