Home / 1,682.40-2,519.76-1,645.92

Finding the Fourth Proportional to 1,682.40, 2,519.76 and 1,645.92

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Solution

The fourth proportional to 1,682.40, 2,519.76 and 1,645.92 is: 2,465.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,682.40 : 2,519.76 = 1,645.92 : x
  2. Step 2: Convert to fraction form
    1,682.40/2,519.76 = 1,645.92/x
  3. Step 3: Cross multiply
    1,682.40x = 2,519.76 × 1,645.92
  4. Step 4: Simplify right side
    1,682.40x = 4,147,323.38
  5. Step 5: Solve for x
    x = 4,147,323.38/1,682.40
  6. Step 6: Final answer
    x = 2,465.12

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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.