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Finding the Fourth Proportional to 3,686.09, 5,086.02 and 2,342.09

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Solution

The fourth proportional to 3,686.09, 5,086.02 and 2,342.09 is: 3,231.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,686.09 : 5,086.02 = 2,342.09 : x
  2. Step 2: Convert to fraction form
    3,686.09/5,086.02 = 2,342.09/x
  3. Step 3: Cross multiply
    3,686.09x = 5,086.02 × 2,342.09
  4. Step 4: Simplify right side
    3,686.09x = 11,911,938.08
  5. Step 5: Solve for x
    x = 11,911,938.08/3,686.09
  6. Step 6: Final answer
    x = 3,231.60

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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.