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Finding the Fourth Proportional to 2,668.96, 4,003.77 and 914.26

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Solution

The fourth proportional to 2,668.96, 4,003.77 and 914.26 is: 1,371.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,668.96 : 4,003.77 = 914.26 : x
  2. Step 2: Convert to fraction form
    2,668.96/4,003.77 = 914.26/x
  3. Step 3: Cross multiply
    2,668.96x = 4,003.77 × 914.26
  4. Step 4: Simplify right side
    2,668.96x = 3,660,486.76
  5. Step 5: Solve for x
    x = 3,660,486.76/2,668.96
  6. Step 6: Final answer
    x = 1,371.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.