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Finding the Fourth Proportional to 8,560.85, 11,738.38 and 7,718.25

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Solution

The fourth proportional to 8,560.85, 11,738.38 and 7,718.25 is: 10,583.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,560.85 : 11,738.38 = 7,718.25 : x
  2. Step 2: Convert to fraction form
    8,560.85/11,738.38 = 7,718.25/x
  3. Step 3: Cross multiply
    8,560.85x = 11,738.38 × 7,718.25
  4. Step 4: Simplify right side
    8,560.85x = 90,599,712.84
  5. Step 5: Solve for x
    x = 90,599,712.84/8,560.85
  6. Step 6: Final answer
    x = 10,583.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.