Home / 3,538.20-4,882.88-1,966.80

Finding the Fourth Proportional to 3,538.20, 4,882.88 and 1,966.80

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Solution

The fourth proportional to 3,538.20, 4,882.88 and 1,966.80 is: 2,714.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,538.20 : 4,882.88 = 1,966.80 : x
  2. Step 2: Convert to fraction form
    3,538.20/4,882.88 = 1,966.80/x
  3. Step 3: Cross multiply
    3,538.20x = 4,882.88 × 1,966.80
  4. Step 4: Simplify right side
    3,538.20x = 9,603,648.38
  5. Step 5: Solve for x
    x = 9,603,648.38/3,538.20
  6. Step 6: Final answer
    x = 2,714.28

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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.