Home / 3,554.28-4,909.86-2,850.78

Finding the Fourth Proportional to 3,554.28, 4,909.86 and 2,850.78

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Solution

The fourth proportional to 3,554.28, 4,909.86 and 2,850.78 is: 3,938.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,554.28 : 4,909.86 = 2,850.78 : x
  2. Step 2: Convert to fraction form
    3,554.28/4,909.86 = 2,850.78/x
  3. Step 3: Cross multiply
    3,554.28x = 4,909.86 × 2,850.78
  4. Step 4: Simplify right side
    3,554.28x = 13,996,930.69
  5. Step 5: Solve for x
    x = 13,996,930.69/3,554.28
  6. Step 6: Final answer
    x = 3,938.05

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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.