Home / 8,869.86-13,307.94-3,939.06

Finding the Fourth Proportional to 8,869.86, 13,307.94 and 3,939.06

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Solution

The fourth proportional to 8,869.86, 13,307.94 and 3,939.06 is: 5,909.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,869.86 : 13,307.94 = 3,939.06 : x
  2. Step 2: Convert to fraction form
    8,869.86/13,307.94 = 3,939.06/x
  3. Step 3: Cross multiply
    8,869.86x = 13,307.94 × 3,939.06
  4. Step 4: Simplify right side
    8,869.86x = 52,420,774.14
  5. Step 5: Solve for x
    x = 52,420,774.14/8,869.86
  6. Step 6: Final answer
    x = 5,909.99

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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.