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Finding the Fourth Proportional to 8,332.60, 12,492.90 and 3,399.80

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Solution

The fourth proportional to 8,332.60, 12,492.90 and 3,399.80 is: 5,097.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,332.60 : 12,492.90 = 3,399.80 : x
  2. Step 2: Convert to fraction form
    8,332.60/12,492.90 = 3,399.80/x
  3. Step 3: Cross multiply
    8,332.60x = 12,492.90 × 3,399.80
  4. Step 4: Simplify right side
    8,332.60x = 42,473,361.42
  5. Step 5: Solve for x
    x = 42,473,361.42/8,332.60
  6. Step 6: Final answer
    x = 5,097.25

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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.