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Finding the Fourth Proportional to 8,647.04, 11,932.72 and 5,289.90

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Solution

The fourth proportional to 8,647.04, 11,932.72 and 5,289.90 is: 7,299.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,647.04 : 11,932.72 = 5,289.90 : x
  2. Step 2: Convert to fraction form
    8,647.04/11,932.72 = 5,289.90/x
  3. Step 3: Cross multiply
    8,647.04x = 11,932.72 × 5,289.90
  4. Step 4: Simplify right side
    8,647.04x = 63,122,895.53
  5. Step 5: Solve for x
    x = 63,122,895.53/8,647.04
  6. Step 6: Final answer
    x = 7,299.94

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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.