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Finding the Fourth Proportional to 3,409.67, 4,705.49 and 1,917.59

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Solution

The fourth proportional to 3,409.67, 4,705.49 and 1,917.59 is: 2,646.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,409.67 : 4,705.49 = 1,917.59 : x
  2. Step 2: Convert to fraction form
    3,409.67/4,705.49 = 1,917.59/x
  3. Step 3: Cross multiply
    3,409.67x = 4,705.49 × 1,917.59
  4. Step 4: Simplify right side
    3,409.67x = 9,023,167.45
  5. Step 5: Solve for x
    x = 9,023,167.45/3,409.67
  6. Step 6: Final answer
    x = 2,646.35

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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.