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Finding the Fourth Proportional to 8,728.68, 13,080.86 and 5,025.32

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Solution

The fourth proportional to 8,728.68, 13,080.86 and 5,025.32 is: 7,530.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,728.68 : 13,080.86 = 5,025.32 : x
  2. Step 2: Convert to fraction form
    8,728.68/13,080.86 = 5,025.32/x
  3. Step 3: Cross multiply
    8,728.68x = 13,080.86 × 5,025.32
  4. Step 4: Simplify right side
    8,728.68x = 65,735,507.38
  5. Step 5: Solve for x
    x = 65,735,507.38/8,728.68
  6. Step 6: Final answer
    x = 7,530.98

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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.