Home / 1,838.17-2,757.23-742.51

Finding the Fourth Proportional to 1,838.17, 2,757.23 and 742.51

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Solution

The fourth proportional to 1,838.17, 2,757.23 and 742.51 is: 1,113.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,838.17 : 2,757.23 = 742.51 : x
  2. Step 2: Convert to fraction form
    1,838.17/2,757.23 = 742.51/x
  3. Step 3: Cross multiply
    1,838.17x = 2,757.23 × 742.51
  4. Step 4: Simplify right side
    1,838.17x = 2,047,270.85
  5. Step 5: Solve for x
    x = 2,047,270.85/1,838.17
  6. Step 6: Final answer
    x = 1,113.76

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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.