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Finding the Fourth Proportional to 8,399.49, 12,600.40 and 3,719.13

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Solution

The fourth proportional to 8,399.49, 12,600.40 and 3,719.13 is: 5,579.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,399.49 : 12,600.40 = 3,719.13 : x
  2. Step 2: Convert to fraction form
    8,399.49/12,600.40 = 3,719.13/x
  3. Step 3: Cross multiply
    8,399.49x = 12,600.40 × 3,719.13
  4. Step 4: Simplify right side
    8,399.49x = 46,862,525.65
  5. Step 5: Solve for x
    x = 46,862,525.65/8,399.49
  6. Step 6: Final answer
    x = 5,579.21

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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.