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Finding the Fourth Proportional to 8,857.15, 13,268.77 and 8,560.42

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Solution

The fourth proportional to 8,857.15, 13,268.77 and 8,560.42 is: 12,824.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,857.15 : 13,268.77 = 8,560.42 : x
  2. Step 2: Convert to fraction form
    8,857.15/13,268.77 = 8,560.42/x
  3. Step 3: Cross multiply
    8,857.15x = 13,268.77 × 8,560.42
  4. Step 4: Simplify right side
    8,857.15x = 113,586,189.51
  5. Step 5: Solve for x
    x = 113,586,189.51/8,857.15
  6. Step 6: Final answer
    x = 12,824.24

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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.