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Finding the Fourth Proportional to 8,781.75, 13,191.00 and 7,465.29

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Solution

The fourth proportional to 8,781.75, 13,191.00 and 7,465.29 is: 11,213.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,781.75 : 13,191.00 = 7,465.29 : x
  2. Step 2: Convert to fraction form
    8,781.75/13,191.00 = 7,465.29/x
  3. Step 3: Cross multiply
    8,781.75x = 13,191.00 × 7,465.29
  4. Step 4: Simplify right side
    8,781.75x = 98,474,603.06
  5. Step 5: Solve for x
    x = 98,474,603.06/8,781.75
  6. Step 6: Final answer
    x = 11,213.56

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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.