Home / 1,789.39-2,469.49-1,003.49

Finding the Fourth Proportional to 1,789.39, 2,469.49 and 1,003.49

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Solution

The fourth proportional to 1,789.39, 2,469.49 and 1,003.49 is: 1,384.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,789.39 : 2,469.49 = 1,003.49 : x
  2. Step 2: Convert to fraction form
    1,789.39/2,469.49 = 1,003.49/x
  3. Step 3: Cross multiply
    1,789.39x = 2,469.49 × 1,003.49
  4. Step 4: Simplify right side
    1,789.39x = 2,478,102.92
  5. Step 5: Solve for x
    x = 2,478,102.92/1,789.39
  6. Step 6: Final answer
    x = 1,384.89

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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.