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Finding the Fourth Proportional to 8,917.86, 13,391.99 and 7,435.56

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Solution

The fourth proportional to 8,917.86, 13,391.99 and 7,435.56 is: 11,166.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,917.86 : 13,391.99 = 7,435.56 : x
  2. Step 2: Convert to fraction form
    8,917.86/13,391.99 = 7,435.56/x
  3. Step 3: Cross multiply
    8,917.86x = 13,391.99 × 7,435.56
  4. Step 4: Simplify right side
    8,917.86x = 99,576,907.99
  5. Step 5: Solve for x
    x = 99,576,907.99/8,917.86
  6. Step 6: Final answer
    x = 11,166.01

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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.