Home / 4,928.80-7,382.40-2,977.60

Finding the Fourth Proportional to 4,928.80, 7,382.40 and 2,977.60

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Solution

The fourth proportional to 4,928.80, 7,382.40 and 2,977.60 is: 4,459.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,928.80 : 7,382.40 = 2,977.60 : x
  2. Step 2: Convert to fraction form
    4,928.80/7,382.40 = 2,977.60/x
  3. Step 3: Cross multiply
    4,928.80x = 7,382.40 × 2,977.60
  4. Step 4: Simplify right side
    4,928.80x = 21,981,834.24
  5. Step 5: Solve for x
    x = 21,981,834.24/4,928.80
  6. Step 6: Final answer
    x = 4,459.88

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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.