Home / 4,928.80-7,392.48-1,811.20

Finding the Fourth Proportional to 4,928.80, 7,392.48 and 1,811.20

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Solution

The fourth proportional to 4,928.80, 7,392.48 and 1,811.20 is: 2,716.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,928.80 : 7,392.48 = 1,811.20 : x
  2. Step 2: Convert to fraction form
    4,928.80/7,392.48 = 1,811.20/x
  3. Step 3: Cross multiply
    4,928.80x = 7,392.48 × 1,811.20
  4. Step 4: Simplify right side
    4,928.80x = 13,389,259.78
  5. Step 5: Solve for x
    x = 13,389,259.78/4,928.80
  6. Step 6: Final answer
    x = 2,716.54

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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.