Home / 7,659.12-11,487.60-2,728.08

Finding the Fourth Proportional to 7,659.12, 11,487.60 and 2,728.08

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Solution

The fourth proportional to 7,659.12, 11,487.60 and 2,728.08 is: 4,091.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,659.12 : 11,487.60 = 2,728.08 : x
  2. Step 2: Convert to fraction form
    7,659.12/11,487.60 = 2,728.08/x
  3. Step 3: Cross multiply
    7,659.12x = 11,487.60 × 2,728.08
  4. Step 4: Simplify right side
    7,659.12x = 31,339,091.81
  5. Step 5: Solve for x
    x = 31,339,091.81/7,659.12
  6. Step 6: Final answer
    x = 4,091.74

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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.