Home / 5,110.78-7,052.70-2,872.66

Finding the Fourth Proportional to 5,110.78, 7,052.70 and 2,872.66

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Solution

The fourth proportional to 5,110.78, 7,052.70 and 2,872.66 is: 3,964.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,110.78 : 7,052.70 = 2,872.66 : x
  2. Step 2: Convert to fraction form
    5,110.78/7,052.70 = 2,872.66/x
  3. Step 3: Cross multiply
    5,110.78x = 7,052.70 × 2,872.66
  4. Step 4: Simplify right side
    5,110.78x = 20,260,009.18
  5. Step 5: Solve for x
    x = 20,260,009.18/5,110.78
  6. Step 6: Final answer
    x = 3,964.17

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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.