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Finding the Fourth Proportional to 8,866.53, 12,235.89 and 4,887.78

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Solution

The fourth proportional to 8,866.53, 12,235.89 and 4,887.78 is: 6,745.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,866.53 : 12,235.89 = 4,887.78 : x
  2. Step 2: Convert to fraction form
    8,866.53/12,235.89 = 4,887.78/x
  3. Step 3: Cross multiply
    8,866.53x = 12,235.89 × 4,887.78
  4. Step 4: Simplify right side
    8,866.53x = 59,806,313.99
  5. Step 5: Solve for x
    x = 59,806,313.99/8,866.53
  6. Step 6: Final answer
    x = 6,745.18

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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.