Home / 8,758.20-13,186.66-7,724.64

Finding the Fourth Proportional to 8,758.20, 13,186.66 and 7,724.64

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Solution

The fourth proportional to 8,758.20, 13,186.66 and 7,724.64 is: 11,630.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,758.20 : 13,186.66 = 7,724.64 : x
  2. Step 2: Convert to fraction form
    8,758.20/13,186.66 = 7,724.64/x
  3. Step 3: Cross multiply
    8,758.20x = 13,186.66 × 7,724.64
  4. Step 4: Simplify right side
    8,758.20x = 101,862,201.30
  5. Step 5: Solve for x
    x = 101,862,201.30/8,758.20
  6. Step 6: Final answer
    x = 11,630.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.