Home / 2,177.32-3,266.30-638.44

Finding the Fourth Proportional to 2,177.32, 3,266.30 and 638.44

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Solution

The fourth proportional to 2,177.32, 3,266.30 and 638.44 is: 957.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,177.32 : 3,266.30 = 638.44 : x
  2. Step 2: Convert to fraction form
    2,177.32/3,266.30 = 638.44/x
  3. Step 3: Cross multiply
    2,177.32x = 3,266.30 × 638.44
  4. Step 4: Simplify right side
    2,177.32x = 2,085,336.57
  5. Step 5: Solve for x
    x = 2,085,336.57/2,177.32
  6. Step 6: Final answer
    x = 957.75

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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.