Home / 5,159.53-7,120.31-2,801.82

Finding the Fourth Proportional to 5,159.53, 7,120.31 and 2,801.82

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Solution

The fourth proportional to 5,159.53, 7,120.31 and 2,801.82 is: 3,866.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,159.53 : 7,120.31 = 2,801.82 : x
  2. Step 2: Convert to fraction form
    5,159.53/7,120.31 = 2,801.82/x
  3. Step 3: Cross multiply
    5,159.53x = 7,120.31 × 2,801.82
  4. Step 4: Simplify right side
    5,159.53x = 19,949,839.66
  5. Step 5: Solve for x
    x = 19,949,839.66/5,159.53
  6. Step 6: Final answer
    x = 3,866.60

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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.