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Finding the Fourth Proportional to 3,287.86, 4,536.57 and 1,890.34

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Solution

The fourth proportional to 3,287.86, 4,536.57 and 1,890.34 is: 2,608.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,287.86 : 4,536.57 = 1,890.34 : x
  2. Step 2: Convert to fraction form
    3,287.86/4,536.57 = 1,890.34/x
  3. Step 3: Cross multiply
    3,287.86x = 4,536.57 × 1,890.34
  4. Step 4: Simplify right side
    3,287.86x = 8,575,659.73
  5. Step 5: Solve for x
    x = 8,575,659.73/3,287.86
  6. Step 6: Final answer
    x = 2,608.28

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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.