Home / 2,770.53-4,156.64-1,209.80

Finding the Fourth Proportional to 2,770.53, 4,156.64 and 1,209.80

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Solution

The fourth proportional to 2,770.53, 4,156.64 and 1,209.80 is: 1,815.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,770.53 : 4,156.64 = 1,209.80 : x
  2. Step 2: Convert to fraction form
    2,770.53/4,156.64 = 1,209.80/x
  3. Step 3: Cross multiply
    2,770.53x = 4,156.64 × 1,209.80
  4. Step 4: Simplify right side
    2,770.53x = 5,028,676.24
  5. Step 5: Solve for x
    x = 5,028,676.24/2,770.53
  6. Step 6: Final answer
    x = 1,815.06

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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.