Home / 2,765.09-3,814.53-1,645.40

Finding the Fourth Proportional to 2,765.09, 3,814.53 and 1,645.40

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Solution

The fourth proportional to 2,765.09, 3,814.53 and 1,645.40 is: 2,269.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,765.09 : 3,814.53 = 1,645.40 : x
  2. Step 2: Convert to fraction form
    2,765.09/3,814.53 = 1,645.40/x
  3. Step 3: Cross multiply
    2,765.09x = 3,814.53 × 1,645.40
  4. Step 4: Simplify right side
    2,765.09x = 6,276,408.59
  5. Step 5: Solve for x
    x = 6,276,408.59/2,765.09
  6. Step 6: Final answer
    x = 2,269.88

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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.