Home / 5,119.56-7,065.68-2,881.88

Finding the Fourth Proportional to 5,119.56, 7,065.68 and 2,881.88

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Solution

The fourth proportional to 5,119.56, 7,065.68 and 2,881.88 is: 3,977.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,119.56 : 7,065.68 = 2,881.88 : x
  2. Step 2: Convert to fraction form
    5,119.56/7,065.68 = 2,881.88/x
  3. Step 3: Cross multiply
    5,119.56x = 7,065.68 × 2,881.88
  4. Step 4: Simplify right side
    5,119.56x = 20,362,392.14
  5. Step 5: Solve for x
    x = 20,362,392.14/5,119.56
  6. Step 6: Final answer
    x = 3,977.37

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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.