Home / 3,251.80-4,877.70-1,172.80

Finding the Fourth Proportional to 3,251.80, 4,877.70 and 1,172.80

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Solution

The fourth proportional to 3,251.80, 4,877.70 and 1,172.80 is: 1,759.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,251.80 : 4,877.70 = 1,172.80 : x
  2. Step 2: Convert to fraction form
    3,251.80/4,877.70 = 1,172.80/x
  3. Step 3: Cross multiply
    3,251.80x = 4,877.70 × 1,172.80
  4. Step 4: Simplify right side
    3,251.80x = 5,720,566.56
  5. Step 5: Solve for x
    x = 5,720,566.56/3,251.80
  6. Step 6: Final answer
    x = 1,759.20

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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.