Home / 5,111.20-7,053.08-2,872.64

Finding the Fourth Proportional to 5,111.20, 7,053.08 and 2,872.64

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Solution

The fourth proportional to 5,111.20, 7,053.08 and 2,872.64 is: 3,964.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,111.20 : 7,053.08 = 2,872.64 : x
  2. Step 2: Convert to fraction form
    5,111.20/7,053.08 = 2,872.64/x
  3. Step 3: Cross multiply
    5,111.20x = 7,053.08 × 2,872.64
  4. Step 4: Simplify right side
    5,111.20x = 20,260,943.16
  5. Step 5: Solve for x
    x = 20,260,943.16/5,111.20
  6. Step 6: Final answer
    x = 3,964.03

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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.