Home / 3,171.40-4,376.49-1,755.17

Finding the Fourth Proportional to 3,171.40, 4,376.49 and 1,755.17

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Solution

The fourth proportional to 3,171.40, 4,376.49 and 1,755.17 is: 2,422.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,171.40 : 4,376.49 = 1,755.17 : x
  2. Step 2: Convert to fraction form
    3,171.40/4,376.49 = 1,755.17/x
  3. Step 3: Cross multiply
    3,171.40x = 4,376.49 × 1,755.17
  4. Step 4: Simplify right side
    3,171.40x = 7,681,483.95
  5. Step 5: Solve for x
    x = 7,681,483.95/3,171.40
  6. Step 6: Final answer
    x = 2,422.11

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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.