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Finding the Fourth Proportional to 3,091.45, 4,265.86 and 1,764.90

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Solution

The fourth proportional to 3,091.45, 4,265.86 and 1,764.90 is: 2,435.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,091.45 : 4,265.86 = 1,764.90 : x
  2. Step 2: Convert to fraction form
    3,091.45/4,265.86 = 1,764.90/x
  3. Step 3: Cross multiply
    3,091.45x = 4,265.86 × 1,764.90
  4. Step 4: Simplify right side
    3,091.45x = 7,528,816.31
  5. Step 5: Solve for x
    x = 7,528,816.31/3,091.45
  6. Step 6: Final answer
    x = 2,435.37

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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.