Home / 4,912.80-7,370.96-2,447.40

Finding the Fourth Proportional to 4,912.80, 7,370.96 and 2,447.40

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Solution

The fourth proportional to 4,912.80, 7,370.96 and 2,447.40 is: 3,671.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,912.80 : 7,370.96 = 2,447.40 : x
  2. Step 2: Convert to fraction form
    4,912.80/7,370.96 = 2,447.40/x
  3. Step 3: Cross multiply
    4,912.80x = 7,370.96 × 2,447.40
  4. Step 4: Simplify right side
    4,912.80x = 18,039,687.50
  5. Step 5: Solve for x
    x = 18,039,687.50/4,912.80
  6. Step 6: Final answer
    x = 3,671.98

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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.