Home / 2,765.26-3,814.38-1,645.45

Finding the Fourth Proportional to 2,765.26, 3,814.38 and 1,645.45

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Solution

The fourth proportional to 2,765.26, 3,814.38 and 1,645.45 is: 2,269.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,765.26 : 3,814.38 = 1,645.45 : x
  2. Step 2: Convert to fraction form
    2,765.26/3,814.38 = 1,645.45/x
  3. Step 3: Cross multiply
    2,765.26x = 3,814.38 × 1,645.45
  4. Step 4: Simplify right side
    2,765.26x = 6,276,371.57
  5. Step 5: Solve for x
    x = 6,276,371.57/2,765.26
  6. Step 6: Final answer
    x = 2,269.72

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1.5x scale

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.