Home / 3,171.80-4,376.99-1,755.55

Finding the Fourth Proportional to 3,171.80, 4,376.99 and 1,755.55

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Solution

The fourth proportional to 3,171.80, 4,376.99 and 1,755.55 is: 2,422.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,171.80 : 4,376.99 = 1,755.55 : x
  2. Step 2: Convert to fraction form
    3,171.80/4,376.99 = 1,755.55/x
  3. Step 3: Cross multiply
    3,171.80x = 4,376.99 × 1,755.55
  4. Step 4: Simplify right side
    3,171.80x = 7,684,009.49
  5. Step 5: Solve for x
    x = 7,684,009.49/3,171.80
  6. Step 6: Final answer
    x = 2,422.60

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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.