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Finding the Fourth Proportional to 2,809.99, 4,214.53 and 1,249.63

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Solution

The fourth proportional to 2,809.99, 4,214.53 and 1,249.63 is: 1,874.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,809.99 : 4,214.53 = 1,249.63 : x
  2. Step 2: Convert to fraction form
    2,809.99/4,214.53 = 1,249.63/x
  3. Step 3: Cross multiply
    2,809.99x = 4,214.53 × 1,249.63
  4. Step 4: Simplify right side
    2,809.99x = 5,266,594.15
  5. Step 5: Solve for x
    x = 5,266,594.15/2,809.99
  6. Step 6: Final answer
    x = 1,874.24

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Similar ratio
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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.