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Finding the Fourth Proportional to 3,018.62, 4,165.81 and 1,692.31

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Solution

The fourth proportional to 3,018.62, 4,165.81 and 1,692.31 is: 2,335.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,018.62 : 4,165.81 = 1,692.31 : x
  2. Step 2: Convert to fraction form
    3,018.62/4,165.81 = 1,692.31/x
  3. Step 3: Cross multiply
    3,018.62x = 4,165.81 × 1,692.31
  4. Step 4: Simplify right side
    3,018.62x = 7,049,827.28
  5. Step 5: Solve for x
    x = 7,049,827.28/3,018.62
  6. Step 6: Final answer
    x = 2,335.45

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1.5x scale

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.