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Finding the Fourth Proportional to 8,656.72, 12,980.46 and 4,492.53

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Solution

The fourth proportional to 8,656.72, 12,980.46 and 4,492.53 is: 6,736.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,656.72 : 12,980.46 = 4,492.53 : x
  2. Step 2: Convert to fraction form
    8,656.72/12,980.46 = 4,492.53/x
  3. Step 3: Cross multiply
    8,656.72x = 12,980.46 × 4,492.53
  4. Step 4: Simplify right side
    8,656.72x = 58,315,105.96
  5. Step 5: Solve for x
    x = 58,315,105.96/8,656.72
  6. Step 6: Final answer
    x = 6,736.40

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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.