Home / 1,789.50-2,469.51-1,003.80

Finding the Fourth Proportional to 1,789.50, 2,469.51 and 1,003.80

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Solution

The fourth proportional to 1,789.50, 2,469.51 and 1,003.80 is: 1,385.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,789.50 : 2,469.51 = 1,003.80 : x
  2. Step 2: Convert to fraction form
    1,789.50/2,469.51 = 1,003.80/x
  3. Step 3: Cross multiply
    1,789.50x = 2,469.51 × 1,003.80
  4. Step 4: Simplify right side
    1,789.50x = 2,478,894.14
  5. Step 5: Solve for x
    x = 2,478,894.14/1,789.50
  6. Step 6: Final answer
    x = 1,385.24

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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.