Home / 6,650-9,968.70-4,311.80

Finding the Fourth Proportional to 6,650, 9,968.70 and 4,311.80

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Solution

The fourth proportional to 6,650, 9,968.70 and 4,311.80 is: 6,463.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,650 : 9,968.70 = 4,311.80 : x
  2. Step 2: Convert to fraction form
    6,650/9,968.70 = 4,311.80/x
  3. Step 3: Cross multiply
    6,650x = 9,968.70 × 4,311.80
  4. Step 4: Simplify right side
    6,650x = 42,983,040.66
  5. Step 5: Solve for x
    x = 42,983,040.66/6,650
  6. Step 6: Final answer
    x = 6,463.62

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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.