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Finding the Fourth Proportional to 9,349.95, 12,887.79 and 8,135.52

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Solution

The fourth proportional to 9,349.95, 12,887.79 and 8,135.52 is: 11,213.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,349.95 : 12,887.79 = 8,135.52 : x
  2. Step 2: Convert to fraction form
    9,349.95/12,887.79 = 8,135.52/x
  3. Step 3: Cross multiply
    9,349.95x = 12,887.79 × 8,135.52
  4. Step 4: Simplify right side
    9,349.95x = 104,848,866.96
  5. Step 5: Solve for x
    x = 104,848,866.96/9,349.95
  6. Step 6: Final answer
    x = 11,213.84

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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.