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Finding the Fourth Proportional to 7,919.64, 11,888.64 and 4,635.12

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Solution

The fourth proportional to 7,919.64, 11,888.64 and 4,635.12 is: 6,958.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,919.64 : 11,888.64 = 4,635.12 : x
  2. Step 2: Convert to fraction form
    7,919.64/11,888.64 = 4,635.12/x
  3. Step 3: Cross multiply
    7,919.64x = 11,888.64 × 4,635.12
  4. Step 4: Simplify right side
    7,919.64x = 55,105,273.04
  5. Step 5: Solve for x
    x = 55,105,273.04/7,919.64
  6. Step 6: Final answer
    x = 6,958.05

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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.