Home / 2,969.13-4,455.21-1,215.43

Finding the Fourth Proportional to 2,969.13, 4,455.21 and 1,215.43

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Solution

The fourth proportional to 2,969.13, 4,455.21 and 1,215.43 is: 1,823.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,969.13 : 4,455.21 = 1,215.43 : x
  2. Step 2: Convert to fraction form
    2,969.13/4,455.21 = 1,215.43/x
  3. Step 3: Cross multiply
    2,969.13x = 4,455.21 × 1,215.43
  4. Step 4: Simplify right side
    2,969.13x = 5,414,967.54
  5. Step 5: Solve for x
    x = 5,414,967.54/2,969.13
  6. Step 6: Final answer
    x = 1,823.76

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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.