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Finding the Fourth Proportional to 3,485.89, 4,811.84 and 2,308.56

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Solution

The fourth proportional to 3,485.89, 4,811.84 and 2,308.56 is: 3,186.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,485.89 : 4,811.84 = 2,308.56 : x
  2. Step 2: Convert to fraction form
    3,485.89/4,811.84 = 2,308.56/x
  3. Step 3: Cross multiply
    3,485.89x = 4,811.84 × 2,308.56
  4. Step 4: Simplify right side
    3,485.89x = 11,108,421.35
  5. Step 5: Solve for x
    x = 11,108,421.35/3,485.89
  6. Step 6: Final answer
    x = 3,186.68

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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.