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Finding the Fourth Proportional to 3,018.36, 4,165.26 and 1,692

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Solution

The fourth proportional to 3,018.36, 4,165.26 and 1,692 is: 2,334.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,018.36 : 4,165.26 = 1,692 : x
  2. Step 2: Convert to fraction form
    3,018.36/4,165.26 = 1,692/x
  3. Step 3: Cross multiply
    3,018.36x = 4,165.26 × 1,692
  4. Step 4: Simplify right side
    3,018.36x = 7,047,619.92
  5. Step 5: Solve for x
    x = 7,047,619.92/3,018.36
  6. Step 6: Final answer
    x = 2,334.92

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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.