Home / 5,159.30-7,119.81-2,801.42

Finding the Fourth Proportional to 5,159.30, 7,119.81 and 2,801.42

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Solution

The fourth proportional to 5,159.30, 7,119.81 and 2,801.42 is: 3,865.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,159.30 : 7,119.81 = 2,801.42 : x
  2. Step 2: Convert to fraction form
    5,159.30/7,119.81 = 2,801.42/x
  3. Step 3: Cross multiply
    5,159.30x = 7,119.81 × 2,801.42
  4. Step 4: Simplify right side
    5,159.30x = 19,945,578.13
  5. Step 5: Solve for x
    x = 19,945,578.13/5,159.30
  6. Step 6: Final answer
    x = 3,865.95

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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.