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Finding the Fourth Proportional to 8,998.71, 12,418.26 and 5,019.99

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Solution

The fourth proportional to 8,998.71, 12,418.26 and 5,019.99 is: 6,927.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,998.71 : 12,418.26 = 5,019.99 : x
  2. Step 2: Convert to fraction form
    8,998.71/12,418.26 = 5,019.99/x
  3. Step 3: Cross multiply
    8,998.71x = 12,418.26 × 5,019.99
  4. Step 4: Simplify right side
    8,998.71x = 62,339,541.02
  5. Step 5: Solve for x
    x = 62,339,541.02/8,998.71
  6. Step 6: Final answer
    x = 6,927.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.