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Finding the Fourth Proportional to 3,171.84, 4,379.29 and 1,977.30

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Solution

The fourth proportional to 3,171.84, 4,379.29 and 1,977.30 is: 2,730.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,171.84 : 4,379.29 = 1,977.30 : x
  2. Step 2: Convert to fraction form
    3,171.84/4,379.29 = 1,977.30/x
  3. Step 3: Cross multiply
    3,171.84x = 4,379.29 × 1,977.30
  4. Step 4: Simplify right side
    3,171.84x = 8,659,165.17
  5. Step 5: Solve for x
    x = 8,659,165.17/3,171.84
  6. Step 6: Final answer
    x = 2,730.02

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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.