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Finding the Fourth Proportional to 8,765.64, 13,153.50 and 3,571.56

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Solution

The fourth proportional to 8,765.64, 13,153.50 and 3,571.56 is: 5,359.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,765.64 : 13,153.50 = 3,571.56 : x
  2. Step 2: Convert to fraction form
    8,765.64/13,153.50 = 3,571.56/x
  3. Step 3: Cross multiply
    8,765.64x = 13,153.50 × 3,571.56
  4. Step 4: Simplify right side
    8,765.64x = 46,978,514.46
  5. Step 5: Solve for x
    x = 46,978,514.46/8,765.64
  6. Step 6: Final answer
    x = 5,359.39

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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.