Home / 1,629.28-2,445.92-1,111.52

Finding the Fourth Proportional to 1,629.28, 2,445.92 and 1,111.52

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Solution

The fourth proportional to 1,629.28, 2,445.92 and 1,111.52 is: 1,668.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,629.28 : 2,445.92 = 1,111.52 : x
  2. Step 2: Convert to fraction form
    1,629.28/2,445.92 = 1,111.52/x
  3. Step 3: Cross multiply
    1,629.28x = 2,445.92 × 1,111.52
  4. Step 4: Simplify right side
    1,629.28x = 2,718,689.00
  5. Step 5: Solve for x
    x = 2,718,689.00/1,629.28
  6. Step 6: Final answer
    x = 1,668.64

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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.