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Finding the Fourth Proportional to 1,894.13, 2,613.90 and 1,066.13

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Solution

The fourth proportional to 1,894.13, 2,613.90 and 1,066.13 is: 1,471.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,894.13 : 2,613.90 = 1,066.13 : x
  2. Step 2: Convert to fraction form
    1,894.13/2,613.90 = 1,066.13/x
  3. Step 3: Cross multiply
    1,894.13x = 2,613.90 × 1,066.13
  4. Step 4: Simplify right side
    1,894.13x = 2,786,757.21
  5. Step 5: Solve for x
    x = 2,786,757.21/1,894.13
  6. Step 6: Final answer
    x = 1,471.26

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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.