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Finding the Fourth Proportional to 3,074.34, 4,241.93 and 1,815.20

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Solution

The fourth proportional to 3,074.34, 4,241.93 and 1,815.20 is: 2,504.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,074.34 : 4,241.93 = 1,815.20 : x
  2. Step 2: Convert to fraction form
    3,074.34/4,241.93 = 1,815.20/x
  3. Step 3: Cross multiply
    3,074.34x = 4,241.93 × 1,815.20
  4. Step 4: Simplify right side
    3,074.34x = 7,699,951.34
  5. Step 5: Solve for x
    x = 7,699,951.34/3,074.34
  6. Step 6: Final answer
    x = 2,504.59

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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.