Home / 1,284.63-1,771.07-1,003.76

Finding the Fourth Proportional to 1,284.63, 1,771.07 and 1,003.76

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Solution

The fourth proportional to 1,284.63, 1,771.07 and 1,003.76 is: 1,383.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,284.63 : 1,771.07 = 1,003.76 : x
  2. Step 2: Convert to fraction form
    1,284.63/1,771.07 = 1,003.76/x
  3. Step 3: Cross multiply
    1,284.63x = 1,771.07 × 1,003.76
  4. Step 4: Simplify right side
    1,284.63x = 1,777,721.99
  5. Step 5: Solve for x
    x = 1,777,721.99/1,284.63
  6. Step 6: Final answer
    x = 1,383.84

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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.