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Finding the Fourth Proportional to 8,477.68, 12,699.24 and 3,545.32

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Solution

The fourth proportional to 8,477.68, 12,699.24 and 3,545.32 is: 5,310.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,477.68 : 12,699.24 = 3,545.32 : x
  2. Step 2: Convert to fraction form
    8,477.68/12,699.24 = 3,545.32/x
  3. Step 3: Cross multiply
    8,477.68x = 12,699.24 × 3,545.32
  4. Step 4: Simplify right side
    8,477.68x = 45,022,869.56
  5. Step 5: Solve for x
    x = 45,022,869.56/8,477.68
  6. Step 6: Final answer
    x = 5,310.75

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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.