Home / 1,637.92-2,260.68-1,078.44

Finding the Fourth Proportional to 1,637.92, 2,260.68 and 1,078.44

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Solution

The fourth proportional to 1,637.92, 2,260.68 and 1,078.44 is: 1,488.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,637.92 : 2,260.68 = 1,078.44 : x
  2. Step 2: Convert to fraction form
    1,637.92/2,260.68 = 1,078.44/x
  3. Step 3: Cross multiply
    1,637.92x = 2,260.68 × 1,078.44
  4. Step 4: Simplify right side
    1,637.92x = 2,438,007.74
  5. Step 5: Solve for x
    x = 2,438,007.74/1,637.92
  6. Step 6: Final answer
    x = 1,488.48

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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.