Home / 4,914.28-6,780.68-3,122.29

Finding the Fourth Proportional to 4,914.28, 6,780.68 and 3,122.29

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Solution

The fourth proportional to 4,914.28, 6,780.68 and 3,122.29 is: 4,308.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,914.28 : 6,780.68 = 3,122.29 : x
  2. Step 2: Convert to fraction form
    4,914.28/6,780.68 = 3,122.29/x
  3. Step 3: Cross multiply
    4,914.28x = 6,780.68 × 3,122.29
  4. Step 4: Simplify right side
    4,914.28x = 21,171,233.75
  5. Step 5: Solve for x
    x = 21,171,233.75/4,914.28
  6. Step 6: Final answer
    x = 4,308.10

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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.