Home / 2,170.29-3,255.13-709.25

Finding the Fourth Proportional to 2,170.29, 3,255.13 and 709.25

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Solution

The fourth proportional to 2,170.29, 3,255.13 and 709.25 is: 1,063.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,170.29 : 3,255.13 = 709.25 : x
  2. Step 2: Convert to fraction form
    2,170.29/3,255.13 = 709.25/x
  3. Step 3: Cross multiply
    2,170.29x = 3,255.13 × 709.25
  4. Step 4: Simplify right side
    2,170.29x = 2,308,697.41
  5. Step 5: Solve for x
    x = 2,308,697.41/2,170.29
  6. Step 6: Final answer
    x = 1,063.77

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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.