Home / 5,109.47-7,049.31-3,319.19

Finding the Fourth Proportional to 5,109.47, 7,049.31 and 3,319.19

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Solution

The fourth proportional to 5,109.47, 7,049.31 and 3,319.19 is: 4,579.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,109.47 : 7,049.31 = 3,319.19 : x
  2. Step 2: Convert to fraction form
    5,109.47/7,049.31 = 3,319.19/x
  3. Step 3: Cross multiply
    5,109.47x = 7,049.31 × 3,319.19
  4. Step 4: Simplify right side
    5,109.47x = 23,397,964.01
  5. Step 5: Solve for x
    x = 23,397,964.01/5,109.47
  6. Step 6: Final answer
    x = 4,579.34

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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.