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Finding the Fourth Proportional to 8,808.75, 13,187.07 and 7,715.25

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Solution

The fourth proportional to 8,808.75, 13,187.07 and 7,715.25 is: 11,550.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,808.75 : 13,187.07 = 7,715.25 : x
  2. Step 2: Convert to fraction form
    8,808.75/13,187.07 = 7,715.25/x
  3. Step 3: Cross multiply
    8,808.75x = 13,187.07 × 7,715.25
  4. Step 4: Simplify right side
    8,808.75x = 101,741,541.82
  5. Step 5: Solve for x
    x = 101,741,541.82/8,808.75
  6. Step 6: Final answer
    x = 11,550.05

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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.