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Finding the Fourth Proportional to 8,647.53, 11,933.64 and 4,921.53

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Solution

The fourth proportional to 8,647.53, 11,933.64 and 4,921.53 is: 6,791.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,647.53 : 11,933.64 = 4,921.53 : x
  2. Step 2: Convert to fraction form
    8,647.53/11,933.64 = 4,921.53/x
  3. Step 3: Cross multiply
    8,647.53x = 11,933.64 × 4,921.53
  4. Step 4: Simplify right side
    8,647.53x = 58,731,767.27
  5. Step 5: Solve for x
    x = 58,731,767.27/8,647.53
  6. Step 6: Final answer
    x = 6,791.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.