Home / 2,772.76-4,156.96-1,385.38

Finding the Fourth Proportional to 2,772.76, 4,156.96 and 1,385.38

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Solution

The fourth proportional to 2,772.76, 4,156.96 and 1,385.38 is: 2,076.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,772.76 : 4,156.96 = 1,385.38 : x
  2. Step 2: Convert to fraction form
    2,772.76/4,156.96 = 1,385.38/x
  3. Step 3: Cross multiply
    2,772.76x = 4,156.96 × 1,385.38
  4. Step 4: Simplify right side
    2,772.76x = 5,758,969.24
  5. Step 5: Solve for x
    x = 5,758,969.24/2,772.76
  6. Step 6: Final answer
    x = 2,076.98

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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.