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Finding the Fourth Proportional to 6,999.65, 10,500.21 and 3,300.89

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Solution

The fourth proportional to 6,999.65, 10,500.21 and 3,300.89 is: 4,951.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,999.65 : 10,500.21 = 3,300.89 : x
  2. Step 2: Convert to fraction form
    6,999.65/10,500.21 = 3,300.89/x
  3. Step 3: Cross multiply
    6,999.65x = 10,500.21 × 3,300.89
  4. Step 4: Simplify right side
    6,999.65x = 34,659,985.69
  5. Step 5: Solve for x
    x = 34,659,985.69/6,999.65
  6. Step 6: Final answer
    x = 4,951.68

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1.5x scale

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.