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Finding the Fourth Proportional to 3,018, 4,162.86 and 2,177.28

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Solution

The fourth proportional to 3,018, 4,162.86 and 2,177.28 is: 3,003.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,018 : 4,162.86 = 2,177.28 : x
  2. Step 2: Convert to fraction form
    3,018/4,162.86 = 2,177.28/x
  3. Step 3: Cross multiply
    3,018x = 4,162.86 × 2,177.28
  4. Step 4: Simplify right side
    3,018x = 9,063,711.82
  5. Step 5: Solve for x
    x = 9,063,711.82/3,018
  6. Step 6: Final answer
    x = 3,003.22

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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.