Home / 8,621.64-12,933.37-3,689.96

Finding the Fourth Proportional to 8,621.64, 12,933.37 and 3,689.96

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Solution

The fourth proportional to 8,621.64, 12,933.37 and 3,689.96 is: 5,535.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,621.64 : 12,933.37 = 3,689.96 : x
  2. Step 2: Convert to fraction form
    8,621.64/12,933.37 = 3,689.96/x
  3. Step 3: Cross multiply
    8,621.64x = 12,933.37 × 3,689.96
  4. Step 4: Simplify right side
    8,621.64x = 47,723,557.91
  5. Step 5: Solve for x
    x = 47,723,557.91/8,621.64
  6. Step 6: Final answer
    x = 5,535.32

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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.