Home / 4,780.96-7,163.35-2,928.21

Finding the Fourth Proportional to 4,780.96, 7,163.35 and 2,928.21

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Solution

The fourth proportional to 4,780.96, 7,163.35 and 2,928.21 is: 4,387.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,780.96 : 7,163.35 = 2,928.21 : x
  2. Step 2: Convert to fraction form
    4,780.96/7,163.35 = 2,928.21/x
  3. Step 3: Cross multiply
    4,780.96x = 7,163.35 × 2,928.21
  4. Step 4: Simplify right side
    4,780.96x = 20,975,757.29
  5. Step 5: Solve for x
    x = 20,975,757.29/4,780.96
  6. Step 6: Final answer
    x = 4,387.35

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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.