Home / 3,117.10-4,302-1,791.28

Finding the Fourth Proportional to 3,117.10, 4,302 and 1,791.28

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Solution

The fourth proportional to 3,117.10, 4,302 and 1,791.28 is: 2,472.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117.10 : 4,302 = 1,791.28 : x
  2. Step 2: Convert to fraction form
    3,117.10/4,302 = 1,791.28/x
  3. Step 3: Cross multiply
    3,117.10x = 4,302 × 1,791.28
  4. Step 4: Simplify right side
    3,117.10x = 7,706,086.56
  5. Step 5: Solve for x
    x = 7,706,086.56/3,117.10
  6. Step 6: Final answer
    x = 2,472.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.