Home / 2,764.29-3,815.15-1,645.34

Finding the Fourth Proportional to 2,764.29, 3,815.15 and 1,645.34

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Solution

The fourth proportional to 2,764.29, 3,815.15 and 1,645.34 is: 2,270.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,764.29 : 3,815.15 = 1,645.34 : x
  2. Step 2: Convert to fraction form
    2,764.29/3,815.15 = 1,645.34/x
  3. Step 3: Cross multiply
    2,764.29x = 3,815.15 × 1,645.34
  4. Step 4: Simplify right side
    2,764.29x = 6,277,191.60
  5. Step 5: Solve for x
    x = 6,277,191.60/2,764.29
  6. Step 6: Final answer
    x = 2,270.82

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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.