Home / 5,159.70-7,120.42-2,801.84

Finding the Fourth Proportional to 5,159.70, 7,120.42 and 2,801.84

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Solution

The fourth proportional to 5,159.70, 7,120.42 and 2,801.84 is: 3,866.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,159.70 : 7,120.42 = 2,801.84 : x
  2. Step 2: Convert to fraction form
    5,159.70/7,120.42 = 2,801.84/x
  3. Step 3: Cross multiply
    5,159.70x = 7,120.42 × 2,801.84
  4. Step 4: Simplify right side
    5,159.70x = 19,950,301.72
  5. Step 5: Solve for x
    x = 19,950,301.72/5,159.70
  6. Step 6: Final answer
    x = 3,866.56

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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.