Home / 2,988.72-4,112.62-2,709.27

Finding the Fourth Proportional to 2,988.72, 4,112.62 and 2,709.27

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Solution

The fourth proportional to 2,988.72, 4,112.62 and 2,709.27 is: 3,728.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,988.72 : 4,112.62 = 2,709.27 : x
  2. Step 2: Convert to fraction form
    2,988.72/4,112.62 = 2,709.27/x
  3. Step 3: Cross multiply
    2,988.72x = 4,112.62 × 2,709.27
  4. Step 4: Simplify right side
    2,988.72x = 11,142,197.99
  5. Step 5: Solve for x
    x = 11,142,197.99/2,988.72
  6. Step 6: Final answer
    x = 3,728.08

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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.