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Finding the Fourth Proportional to 3,409.41, 4,704.75 and 1,917.57

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Solution

The fourth proportional to 3,409.41, 4,704.75 and 1,917.57 is: 2,646.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,409.41 : 4,704.75 = 1,917.57 : x
  2. Step 2: Convert to fraction form
    3,409.41/4,704.75 = 1,917.57/x
  3. Step 3: Cross multiply
    3,409.41x = 4,704.75 × 1,917.57
  4. Step 4: Simplify right side
    3,409.41x = 9,021,687.46
  5. Step 5: Solve for x
    x = 9,021,687.46/3,409.41
  6. Step 6: Final answer
    x = 2,646.11

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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.