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Finding the Fourth Proportional to 3,171.75, 4,377.02 and 1,774.77

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Solution

The fourth proportional to 3,171.75, 4,377.02 and 1,774.77 is: 2,449.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,171.75 : 4,377.02 = 1,774.77 : x
  2. Step 2: Convert to fraction form
    3,171.75/4,377.02 = 1,774.77/x
  3. Step 3: Cross multiply
    3,171.75x = 4,377.02 × 1,774.77
  4. Step 4: Simplify right side
    3,171.75x = 7,768,194.91
  5. Step 5: Solve for x
    x = 7,768,194.91/3,171.75
  6. Step 6: Final answer
    x = 2,449.18

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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.