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Finding the Fourth Proportional to 3,173.68, 4,379.88 and 1,776.88

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Solution

The fourth proportional to 3,173.68, 4,379.88 and 1,776.88 is: 2,452.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,173.68 : 4,379.88 = 1,776.88 : x
  2. Step 2: Convert to fraction form
    3,173.68/4,379.88 = 1,776.88/x
  3. Step 3: Cross multiply
    3,173.68x = 4,379.88 × 1,776.88
  4. Step 4: Simplify right side
    3,173.68x = 7,782,521.17
  5. Step 5: Solve for x
    x = 7,782,521.17/3,173.68
  6. Step 6: Final answer
    x = 2,452.21

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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.