Home / 4,975.21-7,454.31-2,778.49

Finding the Fourth Proportional to 4,975.21, 7,454.31 and 2,778.49

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Solution

The fourth proportional to 4,975.21, 7,454.31 and 2,778.49 is: 4,162.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,975.21 : 7,454.31 = 2,778.49 : x
  2. Step 2: Convert to fraction form
    4,975.21/7,454.31 = 2,778.49/x
  3. Step 3: Cross multiply
    4,975.21x = 7,454.31 × 2,778.49
  4. Step 4: Simplify right side
    4,975.21x = 20,711,725.79
  5. Step 5: Solve for x
    x = 20,711,725.79/4,975.21
  6. Step 6: Final answer
    x = 4,162.99

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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.