Home / 3,171.48-4,376.43-1,755.12

Finding the Fourth Proportional to 3,171.48, 4,376.43 and 1,755.12

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Solution

The fourth proportional to 3,171.48, 4,376.43 and 1,755.12 is: 2,421.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,171.48 : 4,376.43 = 1,755.12 : x
  2. Step 2: Convert to fraction form
    3,171.48/4,376.43 = 1,755.12/x
  3. Step 3: Cross multiply
    3,171.48x = 4,376.43 × 1,755.12
  4. Step 4: Simplify right side
    3,171.48x = 7,681,159.82
  5. Step 5: Solve for x
    x = 7,681,159.82/3,171.48
  6. Step 6: Final answer
    x = 2,421.95

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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.