Home / 3,286.77-4,931.69-1,643.43

Finding the Fourth Proportional to 3,286.77, 4,931.69 and 1,643.43

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Solution

The fourth proportional to 3,286.77, 4,931.69 and 1,643.43 is: 2,465.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,286.77 : 4,931.69 = 1,643.43 : x
  2. Step 2: Convert to fraction form
    3,286.77/4,931.69 = 1,643.43/x
  3. Step 3: Cross multiply
    3,286.77x = 4,931.69 × 1,643.43
  4. Step 4: Simplify right side
    3,286.77x = 8,104,887.30
  5. Step 5: Solve for x
    x = 8,104,887.30/3,286.77
  6. Step 6: Final answer
    x = 2,465.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.