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Finding the Fourth Proportional to 4,999.36, 6,900.50 and 3,109.82

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Solution

The fourth proportional to 4,999.36, 6,900.50 and 3,109.82 is: 4,292.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,999.36 : 6,900.50 = 3,109.82 : x
  2. Step 2: Convert to fraction form
    4,999.36/6,900.50 = 3,109.82/x
  3. Step 3: Cross multiply
    4,999.36x = 6,900.50 × 3,109.82
  4. Step 4: Simplify right side
    4,999.36x = 21,459,312.12
  5. Step 5: Solve for x
    x = 21,459,312.12/4,999.36
  6. Step 6: Final answer
    x = 4,292.41

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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.