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Finding the Fourth Proportional to 3,612.98, 4,986.84 and 2,287.42

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Solution

The fourth proportional to 3,612.98, 4,986.84 and 2,287.42 is: 3,157.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,612.98 : 4,986.84 = 2,287.42 : x
  2. Step 2: Convert to fraction form
    3,612.98/4,986.84 = 2,287.42/x
  3. Step 3: Cross multiply
    3,612.98x = 4,986.84 × 2,287.42
  4. Step 4: Simplify right side
    3,612.98x = 11,406,997.55
  5. Step 5: Solve for x
    x = 11,406,997.55/3,612.98
  6. Step 6: Final answer
    x = 3,157.23

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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.