Home / 5,110.79-7,052.91-2,872.76

Finding the Fourth Proportional to 5,110.79, 7,052.91 and 2,872.76

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Solution

The fourth proportional to 5,110.79, 7,052.91 and 2,872.76 is: 3,964.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,110.79 : 7,052.91 = 2,872.76 : x
  2. Step 2: Convert to fraction form
    5,110.79/7,052.91 = 2,872.76/x
  3. Step 3: Cross multiply
    5,110.79x = 7,052.91 × 2,872.76
  4. Step 4: Simplify right side
    5,110.79x = 20,261,317.73
  5. Step 5: Solve for x
    x = 20,261,317.73/5,110.79
  6. Step 6: Final answer
    x = 3,964.42

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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.