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Finding the Fourth Proportional to 8,422.79, 12,634.01 and 3,741.53

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Solution

The fourth proportional to 8,422.79, 12,634.01 and 3,741.53 is: 5,612.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,422.79 : 12,634.01 = 3,741.53 : x
  2. Step 2: Convert to fraction form
    8,422.79/12,634.01 = 3,741.53/x
  3. Step 3: Cross multiply
    8,422.79x = 12,634.01 × 3,741.53
  4. Step 4: Simplify right side
    8,422.79x = 47,270,459.59
  5. Step 5: Solve for x
    x = 47,270,459.59/8,422.79
  6. Step 6: Final answer
    x = 5,612.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.