Home / 3,966.08-5,472.64-2,640.64

Finding the Fourth Proportional to 3,966.08, 5,472.64 and 2,640.64

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Solution

The fourth proportional to 3,966.08, 5,472.64 and 2,640.64 is: 3,643.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,966.08 : 5,472.64 = 2,640.64 : x
  2. Step 2: Convert to fraction form
    3,966.08/5,472.64 = 2,640.64/x
  3. Step 3: Cross multiply
    3,966.08x = 5,472.64 × 2,640.64
  4. Step 4: Simplify right side
    3,966.08x = 14,451,272.09
  5. Step 5: Solve for x
    x = 14,451,272.09/3,966.08
  6. Step 6: Final answer
    x = 3,643.72

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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.