Home / 2,768.74-4,153.11-1,125.28

Finding the Fourth Proportional to 2,768.74, 4,153.11 and 1,125.28

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Solution

The fourth proportional to 2,768.74, 4,153.11 and 1,125.28 is: 1,687.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,768.74 : 4,153.11 = 1,125.28 : x
  2. Step 2: Convert to fraction form
    2,768.74/4,153.11 = 1,125.28/x
  3. Step 3: Cross multiply
    2,768.74x = 4,153.11 × 1,125.28
  4. Step 4: Simplify right side
    2,768.74x = 4,673,411.62
  5. Step 5: Solve for x
    x = 4,673,411.62/2,768.74
  6. Step 6: Final answer
    x = 1,687.92

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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.