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Finding the Fourth Proportional to 3,561.93, 4,918.20 and 2,774.61

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Solution

The fourth proportional to 3,561.93, 4,918.20 and 2,774.61 is: 3,831.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,561.93 : 4,918.20 = 2,774.61 : x
  2. Step 2: Convert to fraction form
    3,561.93/4,918.20 = 2,774.61/x
  3. Step 3: Cross multiply
    3,561.93x = 4,918.20 × 2,774.61
  4. Step 4: Simplify right side
    3,561.93x = 13,646,086.90
  5. Step 5: Solve for x
    x = 13,646,086.90/3,561.93
  6. Step 6: Final answer
    x = 3,831.09

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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.