Home / 5,159.67-7,120.37-2,801.82

Finding the Fourth Proportional to 5,159.67, 7,120.37 and 2,801.82

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Solution

The fourth proportional to 5,159.67, 7,120.37 and 2,801.82 is: 3,866.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,159.67 : 7,120.37 = 2,801.82 : x
  2. Step 2: Convert to fraction form
    5,159.67/7,120.37 = 2,801.82/x
  3. Step 3: Cross multiply
    5,159.67x = 7,120.37 × 2,801.82
  4. Step 4: Simplify right side
    5,159.67x = 19,950,028.78
  5. Step 5: Solve for x
    x = 19,950,028.78/5,159.67
  6. Step 6: Final answer
    x = 3,866.53

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1.5x scale

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.