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Finding the Fourth Proportional to 6,991.05, 10,493.51 and 6,205.53

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Solution

The fourth proportional to 6,991.05, 10,493.51 and 6,205.53 is: 9,314.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,991.05 : 10,493.51 = 6,205.53 : x
  2. Step 2: Convert to fraction form
    6,991.05/10,493.51 = 6,205.53/x
  3. Step 3: Cross multiply
    6,991.05x = 10,493.51 × 6,205.53
  4. Step 4: Simplify right side
    6,991.05x = 65,117,760.08
  5. Step 5: Solve for x
    x = 65,117,760.08/6,991.05
  6. Step 6: Final answer
    x = 9,314.45

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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.