Home / 6,639.18-9,958.80-3,165.90

Finding the Fourth Proportional to 6,639.18, 9,958.80 and 3,165.90

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Solution

The fourth proportional to 6,639.18, 9,958.80 and 3,165.90 is: 4,748.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,639.18 : 9,958.80 = 3,165.90 : x
  2. Step 2: Convert to fraction form
    6,639.18/9,958.80 = 3,165.90/x
  3. Step 3: Cross multiply
    6,639.18x = 9,958.80 × 3,165.90
  4. Step 4: Simplify right side
    6,639.18x = 31,528,564.92
  5. Step 5: Solve for x
    x = 31,528,564.92/6,639.18
  6. Step 6: Final answer
    x = 4,748.86

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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.