Home / 4,771.40-7,118.81-4,245.15

Finding the Fourth Proportional to 4,771.40, 7,118.81 and 4,245.15

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Solution

The fourth proportional to 4,771.40, 7,118.81 and 4,245.15 is: 6,333.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,771.40 : 7,118.81 = 4,245.15 : x
  2. Step 2: Convert to fraction form
    4,771.40/7,118.81 = 4,245.15/x
  3. Step 3: Cross multiply
    4,771.40x = 7,118.81 × 4,245.15
  4. Step 4: Simplify right side
    4,771.40x = 30,220,380.68
  5. Step 5: Solve for x
    x = 30,220,380.68/4,771.40
  6. Step 6: Final answer
    x = 6,333.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.