Home / 3,251.32-4,485.66-1,991.92

Finding the Fourth Proportional to 3,251.32, 4,485.66 and 1,991.92

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Solution

The fourth proportional to 3,251.32, 4,485.66 and 1,991.92 is: 2,748.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,251.32 : 4,485.66 = 1,991.92 : x
  2. Step 2: Convert to fraction form
    3,251.32/4,485.66 = 1,991.92/x
  3. Step 3: Cross multiply
    3,251.32x = 4,485.66 × 1,991.92
  4. Step 4: Simplify right side
    3,251.32x = 8,935,075.87
  5. Step 5: Solve for x
    x = 8,935,075.87/3,251.32
  6. Step 6: Final answer
    x = 2,748.14

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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.