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Finding the Fourth Proportional to 2,791.86, 3,852.81 and 1,613.10

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Solution

The fourth proportional to 2,791.86, 3,852.81 and 1,613.10 is: 2,226.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,791.86 : 3,852.81 = 1,613.10 : x
  2. Step 2: Convert to fraction form
    2,791.86/3,852.81 = 1,613.10/x
  3. Step 3: Cross multiply
    2,791.86x = 3,852.81 × 1,613.10
  4. Step 4: Simplify right side
    2,791.86x = 6,214,967.81
  5. Step 5: Solve for x
    x = 6,214,967.81/2,791.86
  6. Step 6: Final answer
    x = 2,226.10

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1.5x scale

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.