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Finding the Fourth Proportional to 6,991.65, 10,487.39 and 2,830.53

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Solution

The fourth proportional to 6,991.65, 10,487.39 and 2,830.53 is: 4,245.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,991.65 : 10,487.39 = 2,830.53 : x
  2. Step 2: Convert to fraction form
    6,991.65/10,487.39 = 2,830.53/x
  3. Step 3: Cross multiply
    6,991.65x = 10,487.39 × 2,830.53
  4. Step 4: Simplify right side
    6,991.65x = 29,684,872.02
  5. Step 5: Solve for x
    x = 29,684,872.02/6,991.65
  6. Step 6: Final answer
    x = 4,245.76

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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.