Home / 1,789.12-2,466-1,228.64

Finding the Fourth Proportional to 1,789.12, 2,466 and 1,228.64

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Solution

The fourth proportional to 1,789.12, 2,466 and 1,228.64 is: 1,693.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,789.12 : 2,466 = 1,228.64 : x
  2. Step 2: Convert to fraction form
    1,789.12/2,466 = 1,228.64/x
  3. Step 3: Cross multiply
    1,789.12x = 2,466 × 1,228.64
  4. Step 4: Simplify right side
    1,789.12x = 3,029,826.24
  5. Step 5: Solve for x
    x = 3,029,826.24/1,789.12
  6. Step 6: Final answer
    x = 1,693.47

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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.