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Finding the Fourth Proportional to 8,490.56, 12,736.24 and 3,560.36

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Solution

The fourth proportional to 8,490.56, 12,736.24 and 3,560.36 is: 5,340.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,490.56 : 12,736.24 = 3,560.36 : x
  2. Step 2: Convert to fraction form
    8,490.56/12,736.24 = 3,560.36/x
  3. Step 3: Cross multiply
    8,490.56x = 12,736.24 × 3,560.36
  4. Step 4: Simplify right side
    8,490.56x = 45,345,526.86
  5. Step 5: Solve for x
    x = 45,345,526.86/8,490.56
  6. Step 6: Final answer
    x = 5,340.70

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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.