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Finding the Fourth Proportional to 8,308.60, 12,454.80 and 7,433.80

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Solution

The fourth proportional to 8,308.60, 12,454.80 and 7,433.80 is: 11,143.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,308.60 : 12,454.80 = 7,433.80 : x
  2. Step 2: Convert to fraction form
    8,308.60/12,454.80 = 7,433.80/x
  3. Step 3: Cross multiply
    8,308.60x = 12,454.80 × 7,433.80
  4. Step 4: Simplify right side
    8,308.60x = 92,586,492.24
  5. Step 5: Solve for x
    x = 92,586,492.24/8,308.60
  6. Step 6: Final answer
    x = 11,143.45

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1.5x scale

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.