Home / 4,872.20-7,309.50-1,409.80

Finding the Fourth Proportional to 4,872.20, 7,309.50 and 1,409.80

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Solution

The fourth proportional to 4,872.20, 7,309.50 and 1,409.80 is: 2,115.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,872.20 : 7,309.50 = 1,409.80 : x
  2. Step 2: Convert to fraction form
    4,872.20/7,309.50 = 1,409.80/x
  3. Step 3: Cross multiply
    4,872.20x = 7,309.50 × 1,409.80
  4. Step 4: Simplify right side
    4,872.20x = 10,304,933.10
  5. Step 5: Solve for x
    x = 10,304,933.10/4,872.20
  6. Step 6: Final answer
    x = 2,115.05

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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.